    //! moment.js

    ;(function (global, factory) {
        typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
        typeof define === 'function' && define.amd ? define(factory) :
        global.moment = factory()
    }(this, (function () { 'use strict';

        var hookCallback;

        function hooks () {
            return hookCallback.apply(null, arguments);
        }

        // This is done to register the method called with moment()
        // without creating circular dependencies.
        function setHookCallback (callback) {
            hookCallback = callback;
        }

        function isArray(input) {
            return input instanceof Array || Object.prototype.toString.call(input) === '[object Array]';
        }

        function isObject(input) {
            // IE8 will treat undefined and null as object if it wasn't for
            // input != null
            return input != null && Object.prototype.toString.call(input) === '[object Object]';
        }

        function isObjectEmpty(obj) {
            if (Object.getOwnPropertyNames) {
                return (Object.getOwnPropertyNames(obj).length === 0);
            } else {
                var k;
                for (k in obj) {
                    if (obj.hasOwnProperty(k)) {
                        return false;
                    }
                }
                return true;
            }
        }

        function isUndefined(input) {
            return input === void 0;
        }

        function isNumber(input) {
            return typeof input === 'number' || Object.prototype.toString.call(input) === '[object Number]';
        }

        function isDate(input) {
            return input instanceof Date || Object.prototype.toString.call(input) === '[object Date]';
        }

        function map(arr, fn) {
            var res = [], i;
            for (i = 0; i < arr.length; ++i) {
                res.push(fn(arr[i], i));
            }
            return res;
        }

        function hasOwnProp(a, b) {
            return Object.prototype.hasOwnProperty.call(a, b);
        }

        function extend(a, b) {
            for (var i in b) {
                if (hasOwnProp(b, i)) {
                    a[i] = b[i];
                }
            }

            if (hasOwnProp(b, 'toString')) {
                a.toString = b.toString;
            }

            if (hasOwnProp(b, 'valueOf')) {
                a.valueOf = b.valueOf;
            }

            return a;
        }

        function createUTC (input, format, locale, strict) {
            return createLocalOrUTC(input, format, locale, strict, true).utc();
        }

        function defaultParsingFlags() {
            // We need to deep clone this object.
            return {
                empty           : false,
                unusedTokens    : [],
                unusedInput     : [],
                overflow        : -2,
                charsLeftOver   : 0,
                nullInput       : false,
                invalidMonth    : null,
                invalidFormat   : false,
                userInvalidated : false,
                iso             : false,
                parsedDateParts : [],
                meridiem        : null,
                rfc2822         : false,
                weekdayMismatch : false
            };
        }

        function getParsingFlags(m) {
            if (m._pf == null) {
                m._pf = defaultParsingFlags();
            }
            return m._pf;
        }

        var some;
        if (Array.prototype.some) {
            some = Array.prototype.some;
        } else {
            some = function (fun) {
                var t = Object(this);
                var len = t.length >>> 0;

                for (var i = 0; i < len; i++) {
                    if (i in t && fun.call(this, t[i], i, t)) {
                        return true;
                    }
                }

                return false;
            };
        }

        function isValid(m) {
            if (m._isValid == null) {
                var flags = getParsingFlags(m);
                var parsedParts = some.call(flags.parsedDateParts, function (i) {
                    return i != null;
                });
                var isNowValid = !isNaN(m._d.getTime()) &&
                    flags.overflow < 0 &&
                    !flags.empty &&
                    !flags.invalidMonth &&
                    !flags.invalidWeekday &&
                    !flags.weekdayMismatch &&
                    !flags.nullInput &&
                    !flags.invalidFormat &&
                    !flags.userInvalidated &&
                    (!flags.meridiem || (flags.meridiem && parsedParts));

                if (m._strict) {
                    isNowValid = isNowValid &&
                        flags.charsLeftOver === 0 &&
                        flags.unusedTokens.length === 0 &&
                        flags.bigHour === undefined;
                }

                if (Object.isFrozen == null || !Object.isFrozen(m)) {
                    m._isValid = isNowValid;
                }
                else {
                    return isNowValid;
                }
            }
            return m._isValid;
        }

        function createInvalid (flags) {
            var m = createUTC(NaN);
            if (flags != null) {
                extend(getParsingFlags(m), flags);
            }
            else {
                getParsingFlags(m).userInvalidated = true;
            }

            return m;
        }

        // Plugins that add properties should also add the key here (null value),
        // so we can properly clone ourselves.
        var momentProperties = hooks.momentProperties = [];

        function copyConfig(to, from) {
            var i, prop, val;

            if (!isUndefined(from._isAMomentObject)) {
                to._isAMomentObject = from._isAMomentObject;
            }
            if (!isUndefined(from._i)) {
                to._i = from._i;
            }
            if (!isUndefined(from._f)) {
                to._f = from._f;
            }
            if (!isUndefined(from._l)) {
                to._l = from._l;
            }
            if (!isUndefined(from._strict)) {
                to._strict = from._strict;
            }
            if (!isUndefined(from._tzm)) {
                to._tzm = from._tzm;
            }
            if (!isUndefined(from._isUTC)) {
                to._isUTC = from._isUTC;
            }
            if (!isUndefined(from._offset)) {
                to._offset = from._offset;
            }
            if (!isUndefined(from._pf)) {
                to._pf = getParsingFlags(from);
            }
            if (!isUndefined(from._locale)) {
                to._locale = from._locale;
            }

            if (momentProperties.length > 0) {
                for (i = 0; i < momentProperties.length; i++) {
                    prop = momentProperties[i];
                    val = from[prop];
                    if (!isUndefined(val)) {
                        to[prop] = val;
                    }
                }
            }

            return to;
        }

        var updateInProgress = false;

        // Moment prototype object
        function Moment(config) {
            copyConfig(this, config);
            this._d = new Date(config._d != null ? config._d.getTime() : NaN);
            if (!this.isValid()) {
                this._d = new Date(NaN);
            }
            // Prevent infinite loop in case updateOffset creates new moment
            // objects.
            if (updateInProgress === false) {
                updateInProgress = true;
                hooks.updateOffset(this);
                updateInProgress = false;
            }
        }

        function isMoment (obj) {
            return obj instanceof Moment || (obj != null && obj._isAMomentObject != null);
        }

        function absFloor (number) {
            if (number < 0) {
                // -0 -> 0
                return Math.ceil(number) || 0;
            } else {
                return Math.floor(number);
            }
        }

        function toInt(argumentForCoercion) {
            var coercedNumber = +argumentForCoercion,
                value = 0;

            if (coercedNumber !== 0 && isFinite(coercedNumber)) {
                value = absFloor(coercedNumber);
            }

            return value;
        }

        // compare two arrays, return the number of differences
        function compareArrays(array1, array2, dontConvert) {
            var len = Math.min(array1.length, array2.length),
                lengthDiff = Math.abs(array1.length - array2.length),
                diffs = 0,
                i;
            for (i = 0; i < len; i++) {
                if ((dontConvert && array1[i] !== array2[i]) ||
                    (!dontConvert && toInt(array1[i]) !== toInt(array2[i]))) {
                    diffs++;
                }
            }
            return diffs + lengthDiff;
        }

        function warn(msg) {
            if (hooks.suppressDeprecationWarnings === false &&
                    (typeof console !==  'undefined') && console.warn) {
                console.warn('Deprecation warning: ' + msg);
            }
        }

        function deprecate(msg, fn) {
            var firstTime = true;

            return extend(function () {
                if (hooks.deprecationHandler != null) {
                    hooks.deprecationHandler(null, msg);
                }
                if (firstTime) {
                    var args = [];
                    var arg;
                    for (var i = 0; i < arguments.length; i++) {
                        arg = '';
                        if (typeof arguments[i] === 'object') {
                            arg += '\n[' + i + '] ';
                            for (var key in arguments[0]) {
                                arg += key + ': ' + arguments[0][key] + ', ';
                            }
                            arg = arg.slice(0, -2); // Remove trailing comma and space
                        } else {
                            arg = arguments[i];
                        }
                        args.push(arg);
                    }
                    warn(msg + '\nArguments: ' + Array.prototype.slice.call(args).join('') + '\n' + (new Error()).stack);
                    firstTime = false;
                }
                return fn.apply(this, arguments);
            }, fn);
        }

        var deprecations = {};

        function deprecateSimple(name, msg) {
            if (hooks.deprecationHandler != null) {
                hooks.deprecationHandler(name, msg);
            }
            if (!deprecations[name]) {
                warn(msg);
                deprecations[name] = true;
            }
        }

        hooks.suppressDeprecationWarnings = false;
        hooks.deprecationHandler = null;

        function isFunction(input) {
            return input instanceof Function || Object.prototype.toString.call(input) === '[object Function]';
        }

        function set (config) {
            var prop, i;
            for (i in config) {
                prop = config[i];
                if (isFunction(prop)) {
                    this[i] = prop;
                } else {
                    this['_' + i] = prop;
                }
            }
            this._config = config;
            // Lenient ordinal parsing accepts just a number in addition to
            // number + (possibly) stuff coming from _dayOfMonthOrdinalParse.
            // TODO: Remove "ordinalParse" fallback in next major release.
            this._dayOfMonthOrdinalParseLenient = new RegExp(
                (this._dayOfMonthOrdinalParse.source || this._ordinalParse.source) +
                    '|' + (/\d{1,2}/).source);
        }

        function mergeConfigs(parentConfig, childConfig) {
            var res = extend({}, parentConfig), prop;
            for (prop in childConfig) {
                if (hasOwnProp(childConfig, prop)) {
                    if (isObject(parentConfig[prop]) && isObject(childConfig[prop])) {
                        res[prop] = {};
                        extend(res[prop], parentConfig[prop]);
                        extend(res[prop], childConfig[prop]);
                    } else if (childConfig[prop] != null) {
                        res[prop] = childConfig[prop];
                    } else {
                        delete res[prop];
                    }
                }
            }
            for (prop in parentConfig) {
                if (hasOwnProp(parentConfig, prop) &&
                        !hasOwnProp(childConfig, prop) &&
                        isObject(parentConfig[prop])) {
                    // make sure changes to properties don't modify parent config
                    res[prop] = extend({}, res[prop]);
                }
            }
            return res;
        }

        function Locale(config) {
            if (config != null) {
                this.set(config);
            }
        }

        var keys;

        if (Object.keys) {
            keys = Object.keys;
        } else {
            keys = function (obj) {
                var i, res = [];
                for (i in obj) {
                    if (hasOwnProp(obj, i)) {
                        res.push(i);
                    }
                }
                return res;
            };
        }

        var defaultCalendar = {
            sameDay : '[Today at] LT',
            nextDay : '[Tomorrow at] LT',
            nextWeek : 'dddd [at] LT',
            lastDay : '[Yesterday at] LT',
            lastWeek : '[Last] dddd [at] LT',
            sameElse : 'L'
        };

        function calendar (key, mom, now) {
            var output = this._calendar[key] || this._calendar['sameElse'];
            return isFunction(output) ? output.call(mom, now) : output;
        }

        var defaultLongDateFormat = {
            LTS  : 'h:mm:ss A',
            LT   : 'h:mm A',
            L    : 'MM/DD/YYYY',
            LL   : 'MMMM D, YYYY',
            LLL  : 'MMMM D, YYYY h:mm A',
            LLLL : 'dddd, MMMM D, YYYY h:mm A'
        };

        function longDateFormat (key) {
            var format = this._longDateFormat[key],
                formatUpper = this._longDateFormat[key.toUpperCase()];

            if (format || !formatUpper) {
                return format;
            }

            this._longDateFormat[key] = formatUpper.replace(/MMMM|MM|DD|dddd/g, function (val) {
                return val.slice(1);
            });

            return this._longDateFormat[key];
        }

        var defaultInvalidDate = 'Invalid date';

        function invalidDate () {
            return this._invalidDate;
        }

        var defaultOrdinal = '%d';
        var defaultDayOfMonthOrdinalParse = /\d{1,2}/;

        function ordinal (number) {
            return this._ordinal.replace('%d', number);
        }

        var defaultRelativeTime = {
            future : 'in %s',
            past   : '%s ago',
            s  : 'a few seconds',
            ss : '%d seconds',
            m  : 'a minute',
            mm : '%d minutes',
            h  : 'an hour',
            hh : '%d hours',
            d  : 'a day',
            dd : '%d days',
            M  : 'a month',
            MM : '%d months',
            y  : 'a year',
            yy : '%d years'
        };

        function relativeTime (number, withoutSuffix, string, isFuture) {
            var output = this._relativeTime[string];
            return (isFunction(output)) ?
                output(number, withoutSuffix, string, isFuture) :
                output.replace(/%d/i, number);
        }

        function pastFuture (diff, output) {
            var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
            return isFunction(format) ? format(output) : format.replace(/%s/i, output);
        }

        var aliases = {};

        function addUnitAlias (unit, shorthand) {
            var lowerCase = unit.toLowerCase();
            aliases[lowerCase] = aliases[lowerCase + 's'] = aliases[shorthand] = unit;
        }

        function normalizeUnits(units) {
            return typeof units === 'string' ? aliases[units] || aliases[units.toLowerCase()] : undefined;
        }

        function normalizeObjectUnits(inputObject) {
            var normalizedInput = {},
                normalizedProp,
                prop;

            for (prop in inputObject) {
                if (hasOwnProp(inputObject, prop)) {
                    normalizedProp = normalizeUnits(prop);
                    if (normalizedProp) {
                        normalizedInput[normalizedProp] = inputObject[prop];
                    }
                }
            }

            return normalizedInput;
        }

        var priorities = {};

        function addUnitPriority(unit, priority) {
            priorities[unit] = priority;
        }

        function getPrioritizedUnits(unitsObj) {
            var units = [];
            for (var u in unitsObj) {
                units.push({unit: u, priority: priorities[u]});
            }
            units.sort(function (a, b) {
                return a.priority - b.priority;
            });
            return units;
        }

        function zeroFill(number, targetLength, forceSign) {
            var absNumber = '' + Math.abs(number),
                zerosToFill = targetLength - absNumber.length,
                sign = number >= 0;
            return (sign ? (forceSign ? '+' : '') : '-') +
                Math.pow(10, Math.max(0, zerosToFill)).toString().substr(1) + absNumber;
        }

        var formattingTokens = /(\[[^\[]*\])|(\\)?([Hh]mm(ss)?|Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Qo?|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|kk?|mm?|ss?|S{1,9}|x|X|zz?|ZZ?|.)/g;

        var localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g;

        var formatFunctions = {};

        var formatTokenFunctions = {};

        // token:    'M'
        // padded:   ['MM', 2]
        // ordinal:  'Mo'
        // callback: function () { this.month() + 1 }
        function addFormatToken (token, padded, ordinal, callback) {
            var func = callback;
            if (typeof callback === 'string') {
                func = function () {
                    return this[callback]();
                };
            }
            if (token) {
                formatTokenFunctions[token] = func;
            }
            if (padded) {
                formatTokenFunctions[padded[0]] = function () {
                    return zeroFill(func.apply(this, arguments), padded[1], padded[2]);
                };
            }
            if (ordinal) {
                formatTokenFunctions[ordinal] = function () {
                    return this.localeData().ordinal(func.apply(this, arguments), token);
                };
            }
        }

        function removeFormattingTokens(input) {
            if (input.match(/\[[\s\S]/)) {
                return input.replace(/^\[|\]$/g, '');
            }
            return input.replace(/\\/g, '');
        }

        function makeFormatFunction(format) {
            var array = format.match(formattingTokens), i, length;

            for (i = 0, length = array.length; i < length; i++) {
                if (formatTokenFunctions[array[i]]) {
                    array[i] = formatTokenFunctions[array[i]];
                } else {
                    array[i] = removeFormattingTokens(array[i]);
                }
            }

            return function (mom) {
                var output = '', i;
                for (i = 0; i < length; i++) {
                    output += isFunction(array[i]) ? array[i].call(mom, format) : array[i];
                }
                return output;
            };
        }

        // format date using native date object
        function formatMoment(m, format) {
            if (!m.isValid()) {
                return m.localeData().invalidDate();
            }

            format = expandFormat(format, m.localeData());
            formatFunctions[format] = formatFunctions[format] || makeFormatFunction(format);

            return formatFunctions[format](m);
        }

        function expandFormat(format, locale) {
            var i = 5;

            function replaceLongDateFormatTokens(input) {
                return locale.longDateFormat(input) || input;
            }

            localFormattingTokens.lastIndex = 0;
            while (i >= 0 && localFormattingTokens.test(format)) {
                format = format.replace(localFormattingTokens, replaceLongDateFormatTokens);
                localFormattingTokens.lastIndex = 0;
                i -= 1;
            }

            return format;
        }

        var match1         = /\d/;            //       0 - 9
        var match2         = /\d\d/;          //      00 - 99
        var match3         = /\d{3}/;         //     000 - 999
        var match4         = /\d{4}/;         //    0000 - 9999
        var match6         = /[+-]?\d{6}/;    // -999999 - 999999
        var match1to2      = /\d\d?/;         //       0 - 99
        var match3to4      = /\d\d\d\d?/;     //     999 - 9999
        var match5to6      = /\d\d\d\d\d\d?/; //   99999 - 999999
        var match1to3      = /\d{1,3}/;       //       0 - 999
        var match1to4      = /\d{1,4}/;       //       0 - 9999
        var match1to6      = /[+-]?\d{1,6}/;  // -999999 - 999999

        var matchUnsigned  = /\d+/;           //       0 - inf
        var matchSigned    = /[+-]?\d+/;      //    -inf - inf

        var matchOffset    = /Z|[+-]\d\d:?\d\d/gi; // +00:00 -00:00 +0000 -0000 or Z
        var matchShortOffset = /Z|[+-]\d\d(?::?\d\d)?/gi; // +00 -00 +00:00 -00:00 +0000 -0000 or Z

        var matchTimestamp = /[+-]?\d+(\.\d{1,3})?/; // 123456789 123456789.123

        // any word (or two) characters or numbers including two/three word month in arabic.
        // includes scottish gaelic two word and hyphenated months
        var matchWord = /[0-9]{0,256}['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFF07\uFF10-\uFFEF]{1,256}|[\u0600-\u06FF\/]{1,256}(\s*?[\u0600-\u06FF]{1,256}){1,2}/i;

        var regexes = {};

        function addRegexToken (token, regex, strictRegex) {
            regexes[token] = isFunction(regex) ? regex : function (isStrict, localeData) {
                return (isStrict && strictRegex) ? strictRegex : regex;
            };
        }

        function getParseRegexForToken (token, config) {
            if (!hasOwnProp(regexes, token)) {
                return new RegExp(unescapeFormat(token));
            }

            return regexes[token](config._strict, config._locale);
        }

        // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
        function unescapeFormat(s) {
            return regexEscape(s.replace('\\', '').replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
                return p1 || p2 || p3 || p4;
            }));
        }

        function regexEscape(s) {
            return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
        }

        var tokens = {};

        function addParseToken (token, callback) {
            var i, func = callback;
            if (typeof token === 'string') {
                token = [token];
            }
            if (isNumber(callback)) {
                func = function (input, array) {
                    array[callback] = toInt(input);
                };
            }
            for (i = 0; i < token.length; i++) {
                tokens[token[i]] = func;
            }
        }

        function addWeekParseToken (token, callback) {
            addParseToken(token, function (input, array, config, token) {
                config._w = config._w || {};
                callback(input, config._w, config, token);
            });
        }

        function addTimeToArrayFromToken(token, input, config) {
            if (input != null && hasOwnProp(tokens, token)) {
                tokens[token](input, config._a, config, token);
            }
        }

        var YEAR = 0;
        var MONTH = 1;
        var DATE = 2;
        var HOUR = 3;
        var MINUTE = 4;
        var SECOND = 5;
        var MILLISECOND = 6;
        var WEEK = 7;
        var WEEKDAY = 8;

        // FORMATTING

        addFormatToken('Y', 0, 0, function () {
            var y = this.year();
            return y <= 9999 ? '' + y : '+' + y;
        });

        addFormatToken(0, ['YY', 2], 0, function () {
            return this.year() % 100;
        });

        addFormatToken(0, ['YYYY',   4],       0, 'year');
        addFormatToken(0, ['YYYYY',  5],       0, 'year');
        addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');

        // ALIASES

        addUnitAlias('year', 'y');

        // PRIORITIES

        addUnitPriority('year', 1);

        // PARSING

        addRegexToken('Y',      matchSigned);
        addRegexToken('YY',     match1to2, match2);
        addRegexToken('YYYY',   match1to4, match4);
        addRegexToken('YYYYY',  match1to6, match6);
        addRegexToken('YYYYYY', match1to6, match6);

        addParseToken(['YYYYY', 'YYYYYY'], YEAR);
        addParseToken('YYYY', function (input, array) {
            array[YEAR] = input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
        });
        addParseToken('YY', function (input, array) {
            array[YEAR] = hooks.parseTwoDigitYear(input);
        });
        addParseToken('Y', function (input, array) {
            array[YEAR] = parseInt(input, 10);
        });

        // HELPERS

        function daysInYear(year) {
            return isLeapYear(year) ? 366 : 365;
        }

        function isLeapYear(year) {
            return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
        }

        // HOOKS

        hooks.parseTwoDigitYear = function (input) {
            return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
        };

        // MOMENTS

        var getSetYear = makeGetSet('FullYear', true);

        function getIsLeapYear () {
            return isLeapYear(this.year());
        }

        function makeGetSet (unit, keepTime) {
            return function (value) {
                if (value != null) {
                    set$1(this, unit, value);
                    hooks.updateOffset(this, keepTime);
                    return this;
                } else {
                    return get(this, unit);
                }
            };
        }

        function get (mom, unit) {
            return mom.isValid() ?
                mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]() : NaN;
        }

        function set$1 (mom, unit, value) {
            if (mom.isValid() && !isNaN(value)) {
                if (unit === 'FullYear' && isLeapYear(mom.year()) && mom.month() === 1 && mom.date() === 29) {
                    mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value, mom.month(), daysInMonth(value, mom.month()));
                }
                else {
                    mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
                }
            }
        }

        // MOMENTS

        function stringGet (units) {
            units = normalizeUnits(units);
            if (isFunction(this[units])) {
                return this[units]();
            }
            return this;
        }

        function stringSet (units, value) {
            if (typeof units === 'object') {
                units = normalizeObjectUnits(units);
                var prioritized = getPrioritizedUnits(units);
                for (var i = 0; i < prioritized.length; i++) {
                    this[prioritized[i].unit](units[prioritized[i].unit]);
                }
            } else {
                units = normalizeUnits(units);
                if (isFunction(this[units])) {
                    return this[units](value);
                }
            }
            return this;
        }

        function mod(n, x) {
            return ((n % x) + x) % x;
        }

        var indexOf;

        if (Array.prototype.indexOf) {
            indexOf = Array.prototype.indexOf;
        } else {
            indexOf = function (o) {
                // I know
                var i;
                for (i = 0; i < this.length; ++i) {
                    if (this[i] === o) {
                        return i;
                    }
                }
                return -1;
            };
        }

        function daysInMonth(year, month) {
            if (isNaN(year) || isNaN(month)) {
                return NaN;
            }
            var modMonth = mod(month, 12);
            year += (month - modMonth) / 12;
            return modMonth === 1 ? (isLeapYear(year) ? 29 : 28) : (31 - modMonth % 7 % 2);
        }

        // FORMATTING

        addFormatToken('M', ['MM', 2], 'Mo', function () {
            return this.month() + 1;
        });

        addFormatToken('MMM', 0, 0, function (format) {
            return this.localeData().monthsShort(this, format);
        });

        addFormatToken('MMMM', 0, 0, function (format) {
            return this.localeData().months(this, format);
        });

        // ALIASES

        addUnitAlias('month', 'M');

        // PRIORITY

        addUnitPriority('month', 8);

        // PARSING

        addRegexToken('M',    match1to2);
        addRegexToken('MM',   match1to2, match2);
        addRegexToken('MMM',  function (isStrict, locale) {
            return locale.monthsShortRegex(isStrict);
        });
        addRegexToken('MMMM', function (isStrict, locale) {
            return locale.monthsRegex(isStrict);
        });

        addParseToken(['M', 'MM'], function (input, array) {
            array[MONTH] = toInt(input) - 1;
        });

        addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
            var month = config._locale.monthsParse(input, token, config._strict);
            // if we didn't find a month name, mark the date as invalid.
            if (month != null) {
                array[MONTH] = month;
            } else {
                getParsingFlags(config).invalidMonth = input;
            }
        });

        // LOCALES

        var MONTHS_IN_FORMAT = /D[oD]?(\[[^\[\]]*\]|\s)+MMMM?/;
        var defaultLocaleMonths = 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_');
        function localeMonths (m, format) {
            if (!m) {
                return isArray(this._months) ? this._months :
                    this._months['standalone'];
            }
            return isArray(this._months) ? this._months[m.month()] :
                this._months[(this._months.isFormat || MONTHS_IN_FORMAT).test(format) ? 'format' : 'standalone'][m.month()];
        }

        var defaultLocaleMonthsShort = 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_');
        function localeMonthsShort (m, format) {
            if (!m) {
                return isArray(this._monthsShort) ? this._monthsShort :
                    this._monthsShort['standalone'];
            }
            return isArray(this._monthsShort) ? this._monthsShort[m.month()] :
                this._monthsShort[MONTHS_IN_FORMAT.test(format) ? 'format' : 'standalone'][m.month()];
        }

        function handleStrictParse(monthName, format, strict) {
            var i, ii, mom, llc = monthName.toLocaleLowerCase();
            if (!this._monthsParse) {
                // this is not used
                this._monthsParse = [];
                this._longMonthsParse = [];
                this._shortMonthsParse = [];
                for (i = 0; i < 12; ++i) {
                    mom = createUTC([2000, i]);
                    this._shortMonthsParse[i] = this.monthsShort(mom, '').toLocaleLowerCase();
                    this._longMonthsParse[i] = this.months(mom, '').toLocaleLowerCase();
                }
            }

            if (strict) {
                if (format === 'MMM') {
                    ii = indexOf.call(this._shortMonthsParse, llc);
                    return ii !== -1 ? ii : null;
                } else {
                    ii = indexOf.call(this._longMonthsParse, llc);
                    return ii !== -1 ? ii : null;
                }
            } else {
                if (format === 'MMM') {
                    ii = indexOf.call(this._shortMonthsParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._longMonthsParse, llc);
                    return ii !== -1 ? ii : null;
                } else {
                    ii = indexOf.call(this._longMonthsParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._shortMonthsParse, llc);
                    return ii !== -1 ? ii : null;
                }
            }
        }

        function localeMonthsParse (monthName, format, strict) {
            var i, mom, regex;

            if (this._monthsParseExact) {
                return handleStrictParse.call(this, monthName, format, strict);
            }

            if (!this._monthsParse) {
                this._monthsParse = [];
                this._longMonthsParse = [];
                this._shortMonthsParse = [];
            }

            // TODO: add sorting
            // Sorting makes sure if one month (or abbr) is a prefix of another
            // see sorting in computeMonthsParse
            for (i = 0; i < 12; i++) {
                // make the regex if we don't have it already
                mom = createUTC([2000, i]);
                if (strict && !this._longMonthsParse[i]) {
                    this._longMonthsParse[i] = new RegExp('^' + this.months(mom, '').replace('.', '') + '$', 'i');
                    this._shortMonthsParse[i] = new RegExp('^' + this.monthsShort(mom, '').replace('.', '') + '$', 'i');
                }
                if (!strict && !this._monthsParse[i]) {
                    regex = '^' + this.months(mom, '') + '|^' + this.monthsShort(mom, '');
                    this._monthsParse[i] = new RegExp(regex.replace('.', ''), 'i');
                }
                // test the regex
                if (strict && format === 'MMMM' && this._longMonthsParse[i].test(monthName)) {
                    return i;
                } else if (strict && format === 'MMM' && this._shortMonthsParse[i].test(monthName)) {
                    return i;
                } else if (!strict && this._monthsParse[i].test(monthName)) {
                    return i;
                }
            }
        }

        // MOMENTS

        function setMonth (mom, value) {
            var dayOfMonth;

            if (!mom.isValid()) {
                // No op
                return mom;
            }

            if (typeof value === 'string') {
                if (/^\d+$/.test(value)) {
                    value = toInt(value);
                } else {
                    value = mom.localeData().monthsParse(value);
                    // TODO: Another silent failure?
                    if (!isNumber(value)) {
                        return mom;
                    }
                }
            }

            dayOfMonth = Math.min(mom.date(), daysInMonth(mom.year(), value));
            mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
            return mom;
        }

        function getSetMonth (value) {
            if (value != null) {
                setMonth(this, value);
                hooks.updateOffset(this, true);
                return this;
            } else {
                return get(this, 'Month');
            }
        }

        function getDaysInMonth () {
            return daysInMonth(this.year(), this.month());
        }

        var defaultMonthsShortRegex = matchWord;
        function monthsShortRegex (isStrict) {
            if (this._monthsParseExact) {
                if (!hasOwnProp(this, '_monthsRegex')) {
                    computeMonthsParse.call(this);
                }
                if (isStrict) {
                    return this._monthsShortStrictRegex;
                } else {
                    return this._monthsShortRegex;
                }
            } else {
                if (!hasOwnProp(this, '_monthsShortRegex')) {
                    this._monthsShortRegex = defaultMonthsShortRegex;
                }
                return this._monthsShortStrictRegex && isStrict ?
                    this._monthsShortStrictRegex : this._monthsShortRegex;
            }
        }

        var defaultMonthsRegex = matchWord;
        function monthsRegex (isStrict) {
            if (this._monthsParseExact) {
                if (!hasOwnProp(this, '_monthsRegex')) {
                    computeMonthsParse.call(this);
                }
                if (isStrict) {
                    return this._monthsStrictRegex;
                } else {
                    return this._monthsRegex;
                }
            } else {
                if (!hasOwnProp(this, '_monthsRegex')) {
                    this._monthsRegex = defaultMonthsRegex;
                }
                return this._monthsStrictRegex && isStrict ?
                    this._monthsStrictRegex : this._monthsRegex;
            }
        }

        function computeMonthsParse () {
            function cmpLenRev(a, b) {
                return b.length - a.length;
            }

            var shortPieces = [], longPieces = [], mixedPieces = [],
                i, mom;
            for (i = 0; i < 12; i++) {
                // make the regex if we don't have it already
                mom = createUTC([2000, i]);
                shortPieces.push(this.monthsShort(mom, ''));
                longPieces.push(this.months(mom, ''));
                mixedPieces.push(this.months(mom, ''));
                mixedPieces.push(this.monthsShort(mom, ''));
            }
            // Sorting makes sure if one month (or abbr) is a prefix of another it
            // will match the longer piece.
            shortPieces.sort(cmpLenRev);
            longPieces.sort(cmpLenRev);
            mixedPieces.sort(cmpLenRev);
            for (i = 0; i < 12; i++) {
                shortPieces[i] = regexEscape(shortPieces[i]);
                longPieces[i] = regexEscape(longPieces[i]);
            }
            for (i = 0; i < 24; i++) {
                mixedPieces[i] = regexEscape(mixedPieces[i]);
            }

            this._monthsRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
            this._monthsShortRegex = this._monthsRegex;
            this._monthsStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
            this._monthsShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
        }

        function createDate (y, m, d, h, M, s, ms) {
            // can't just apply() to create a date:
            // https://stackoverflow.com/q/181348
            var date;
            // the date constructor remaps years 0-99 to 1900-1999
            if (y < 100 && y >= 0) {
                // preserve leap years using a full 400 year cycle, then reset
                date = new Date(y + 400, m, d, h, M, s, ms);
                if (isFinite(date.getFullYear())) {
                    date.setFullYear(y);
                }
            } else {
                date = new Date(y, m, d, h, M, s, ms);
            }

            return date;
        }

        function createUTCDate (y) {
            var date;
            // the Date.UTC function remaps years 0-99 to 1900-1999
            if (y < 100 && y >= 0) {
                var args = Array.prototype.slice.call(arguments);
                // preserve leap years using a full 400 year cycle, then reset
                args[0] = y + 400;
                date = new Date(Date.UTC.apply(null, args));
                if (isFinite(date.getUTCFullYear())) {
                    date.setUTCFullYear(y);
                }
            } else {
                date = new Date(Date.UTC.apply(null, arguments));
            }

            return date;
        }

        // start-of-first-week - start-of-year
        function firstWeekOffset(year, dow, doy) {
            var // first-week day -- which january is always in the first week (4 for iso, 1 for other)
                fwd = 7 + dow - doy,
                // first-week day local weekday -- which local weekday is fwd
                fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7;

            return -fwdlw + fwd - 1;
        }

        // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
        function dayOfYearFromWeeks(year, week, weekday, dow, doy) {
            var localWeekday = (7 + weekday - dow) % 7,
                weekOffset = firstWeekOffset(year, dow, doy),
                dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset,
                resYear, resDayOfYear;

            if (dayOfYear <= 0) {
                resYear = year - 1;
                resDayOfYear = daysInYear(resYear) + dayOfYear;
            } else if (dayOfYear > daysInYear(year)) {
                resYear = year + 1;
                resDayOfYear = dayOfYear - daysInYear(year);
            } else {
                resYear = year;
                resDayOfYear = dayOfYear;
            }

            return {
                year: resYear,
                dayOfYear: resDayOfYear
            };
        }

        function weekOfYear(mom, dow, doy) {
            var weekOffset = firstWeekOffset(mom.year(), dow, doy),
                week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1,
                resWeek, resYear;

            if (week < 1) {
                resYear = mom.year() - 1;
                resWeek = week + weeksInYear(resYear, dow, doy);
            } else if (week > weeksInYear(mom.year(), dow, doy)) {
                resWeek = week - weeksInYear(mom.year(), dow, doy);
                resYear = mom.year() + 1;
            } else {
                resYear = mom.year();
                resWeek = week;
            }

            return {
                week: resWeek,
                year: resYear
            };
        }

        function weeksInYear(year, dow, doy) {
            var weekOffset = firstWeekOffset(year, dow, doy),
                weekOffsetNext = firstWeekOffset(year + 1, dow, doy);
            return (daysInYear(year) - weekOffset + weekOffsetNext) / 7;
        }

        // FORMATTING

        addFormatToken('w', ['ww', 2], 'wo', 'week');
        addFormatToken('W', ['WW', 2], 'Wo', 'isoWeek');

        // ALIASES

        addUnitAlias('week', 'w');
        addUnitAlias('isoWeek', 'W');

        // PRIORITIES

        addUnitPriority('week', 5);
        addUnitPriority('isoWeek', 5);

        // PARSING

        addRegexToken('w',  match1to2);
        addRegexToken('ww', match1to2, match2);
        addRegexToken('W',  match1to2);
        addRegexToken('WW', match1to2, match2);

        addWeekParseToken(['w', 'ww', 'W', 'WW'], function (input, week, config, token) {
            week[token.substr(0, 1)] = toInt(input);
        });

        // HELPERS

        // LOCALES

        function localeWeek (mom) {
            return weekOfYear(mom, this._week.dow, this._week.doy).week;
        }

        var defaultLocaleWeek = {
            dow : 0, // Sunday is the first day of the week.
            doy : 6  // The week that contains Jan 6th is the first week of the year.
        };

        function localeFirstDayOfWeek () {
            return this._week.dow;
        }

        function localeFirstDayOfYear () {
            return this._week.doy;
        }

        // MOMENTS

        function getSetWeek (input) {
            var week = this.localeData().week(this);
            return input == null ? week : this.add((input - week) * 7, 'd');
        }

        function getSetISOWeek (input) {
            var week = weekOfYear(this, 1, 4).week;
            return input == null ? week : this.add((input - week) * 7, 'd');
        }

        // FORMATTING

        addFormatToken('d', 0, 'do', 'day');

        addFormatToken('dd', 0, 0, function (format) {
            return this.localeData().weekdaysMin(this, format);
        });

        addFormatToken('ddd', 0, 0, function (format) {
            return this.localeData().weekdaysShort(this, format);
        });

        addFormatToken('dddd', 0, 0, function (format) {
            return this.localeData().weekdays(this, format);
        });

        addFormatToken('e', 0, 0, 'weekday');
        addFormatToken('E', 0, 0, 'isoWeekday');

        // ALIASES

        addUnitAlias('day', 'd');
        addUnitAlias('weekday', 'e');
        addUnitAlias('isoWeekday', 'E');

        // PRIORITY
        addUnitPriority('day', 11);
        addUnitPriority('weekday', 11);
        addUnitPriority('isoWeekday', 11);

        // PARSING

        addRegexToken('d',    match1to2);
        addRegexToken('e',    match1to2);
        addRegexToken('E',    match1to2);
        addRegexToken('dd',   function (isStrict, locale) {
            return locale.weekdaysMinRegex(isStrict);
        });
        addRegexToken('ddd',   function (isStrict, locale) {
            return locale.weekdaysShortRegex(isStrict);
        });
        addRegexToken('dddd',   function (isStrict, locale) {
            return locale.weekdaysRegex(isStrict);
        });

        addWeekParseToken(['dd', 'ddd', 'dddd'], function (input, week, config, token) {
            var weekday = config._locale.weekdaysParse(input, token, config._strict);
            // if we didn't get a weekday name, mark the date as invalid
            if (weekday != null) {
                week.d = weekday;
            } else {
                getParsingFlags(config).invalidWeekday = input;
            }
        });

        addWeekParseToken(['d', 'e', 'E'], function (input, week, config, token) {
            week[token] = toInt(input);
        });

        // HELPERS

        function parseWeekday(input, locale) {
            if (typeof input !== 'string') {
                return input;
            }

            if (!isNaN(input)) {
                return parseInt(input, 10);
            }

            input = locale.weekdaysParse(input);
            if (typeof input === 'number') {
                return input;
            }

            return null;
        }

        function parseIsoWeekday(input, locale) {
            if (typeof input === 'string') {
                return locale.weekdaysParse(input) % 7 || 7;
            }
            return isNaN(input) ? null : input;
        }

        // LOCALES
        function shiftWeekdays (ws, n) {
            return ws.slice(n, 7).concat(ws.slice(0, n));
        }

        var defaultLocaleWeekdays = 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_');
        function localeWeekdays (m, format) {
            var weekdays = isArray(this._weekdays) ? this._weekdays :
                this._weekdays[(m && m !== true && this._weekdays.isFormat.test(format)) ? 'format' : 'standalone'];
            return (m === true) ? shiftWeekdays(weekdays, this._week.dow)
                : (m) ? weekdays[m.day()] : weekdays;
        }

        var defaultLocaleWeekdaysShort = 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_');
        function localeWeekdaysShort (m) {
            return (m === true) ? shiftWeekdays(this._weekdaysShort, this._week.dow)
                : (m) ? this._weekdaysShort[m.day()] : this._weekdaysShort;
        }

        var defaultLocaleWeekdaysMin = 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_');
        function localeWeekdaysMin (m) {
            return (m === true) ? shiftWeekdays(this._weekdaysMin, this._week.dow)
                : (m) ? this._weekdaysMin[m.day()] : this._weekdaysMin;
        }

        function handleStrictParse$1(weekdayName, format, strict) {
            var i, ii, mom, llc = weekdayName.toLocaleLowerCase();
            if (!this._weekdaysParse) {
                this._weekdaysParse = [];
                this._shortWeekdaysParse = [];
                this._minWeekdaysParse = [];

                for (i = 0; i < 7; ++i) {
                    mom = createUTC([2000, 1]).day(i);
                    this._minWeekdaysParse[i] = this.weekdaysMin(mom, '').toLocaleLowerCase();
                    this._shortWeekdaysParse[i] = this.weekdaysShort(mom, '').toLocaleLowerCase();
                    this._weekdaysParse[i] = this.weekdays(mom, '').toLocaleLowerCase();
                }
            }

            if (strict) {
                if (format === 'dddd') {
                    ii = indexOf.call(this._weekdaysParse, llc);
                    return ii !== -1 ? ii : null;
                } else if (format === 'ddd') {
                    ii = indexOf.call(this._shortWeekdaysParse, llc);
                    return ii !== -1 ? ii : null;
                } else {
                    ii = indexOf.call(this._minWeekdaysParse, llc);
                    return ii !== -1 ? ii : null;
                }
            } else {
                if (format === 'dddd') {
                    ii = indexOf.call(this._weekdaysParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._shortWeekdaysParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._minWeekdaysParse, llc);
                    return ii !== -1 ? ii : null;
                } else if (format === 'ddd') {
                    ii = indexOf.call(this._shortWeekdaysParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._weekdaysParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._minWeekdaysParse, llc);
                    return ii !== -1 ? ii : null;
                } else {
                    ii = indexOf.call(this._minWeekdaysParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._weekdaysParse, llc);
                    if (ii !== -1) {
                        return ii;
                    }
                    ii = indexOf.call(this._shortWeekdaysParse, llc);
                    return ii !== -1 ? ii : null;
                }
            }
        }

        function localeWeekdaysParse (weekdayName, format, strict) {
            var i, mom, regex;

            if (this._weekdaysParseExact) {
                return handleStrictParse$1.call(this, weekdayName, format, strict);
            }

            if (!this._weekdaysParse) {
                this._weekdaysParse = [];
                this._minWeekdaysParse = [];
                this._shortWeekdaysParse = [];
                this._fullWeekdaysParse = [];
            }

            for (i = 0; i < 7; i++) {
                // make the regex if we don't have it already

                mom = createUTC([2000, 1]).day(i);
                if (strict && !this._fullWeekdaysParse[i]) {
                    this._fullWeekdaysParse[i] = new RegExp('^' + this.weekdays(mom, '').replace('.', '\\.?') + '$', 'i');
                    this._shortWeekdaysParse[i] = new RegExp('^' + this.weekdaysShort(mom, '').replace('.', '\\.?') + '$', 'i');
                    this._minWeekdaysParse[i] = new RegExp('^' + this.weekdaysMin(mom, '').replace('.', '\\.?') + '$', 'i');
                }
                if (!this._weekdaysParse[i]) {
                    regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
                    this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
                }
                // test the regex
                if (strict && format === 'dddd' && this._fullWeekdaysParse[i].test(weekdayName)) {
                    return i;
                } else if (strict && format === 'ddd' && this._shortWeekdaysParse[i].test(weekdayName)) {
                    return i;
                } else if (strict && format === 'dd' && this._minWeekdaysParse[i].test(weekdayName)) {
                    return i;
                } else if (!strict && this._weekdaysParse[i].test(weekdayName)) {
                    return i;
                }
            }
        }

        // MOMENTS

        function getSetDayOfWeek (input) {
            if (!this.isValid()) {
                return input != null ? this : NaN;
            }
            var day = this._isUTC ? this._d.getUTCDay() : this._d.getDay();
            if (input != null) {
                input = parseWeekday(input, this.localeData());
                return this.add(input - day, 'd');
            } else {
                return day;
            }
        }

        function getSetLocaleDayOfWeek (input) {
            if (!this.isValid()) {
                return input != null ? this : NaN;
            }
            var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
            return input == null ? weekday : this.add(input - weekday, 'd');
        }

        function getSetISODayOfWeek (input) {
            if (!this.isValid()) {
                return input != null ? this : NaN;
            }

            // behaves the same as moment#day except
            // as a getter, returns 7 instead of 0 (1-7 range instead of 0-6)
            // as a setter, sunday should belong to the previous week.

            if (input != null) {
                var weekday = parseIsoWeekday(input, this.localeData());
                return this.day(this.day() % 7 ? weekday : weekday - 7);
            } else {
                return this.day() || 7;
            }
        }

        var defaultWeekdaysRegex = matchWord;
        function weekdaysRegex (isStrict) {
            if (this._weekdaysParseExact) {
                if (!hasOwnProp(this, '_weekdaysRegex')) {
                    computeWeekdaysParse.call(this);
                }
                if (isStrict) {
                    return this._weekdaysStrictRegex;
                } else {
                    return this._weekdaysRegex;
                }
            } else {
                if (!hasOwnProp(this, '_weekdaysRegex')) {
                    this._weekdaysRegex = defaultWeekdaysRegex;
                }
                return this._weekdaysStrictRegex && isStrict ?
                    this._weekdaysStrictRegex : this._weekdaysRegex;
            }
        }

        var defaultWeekdaysShortRegex = matchWord;
        function weekdaysShortRegex (isStrict) {
            if (this._weekdaysParseExact) {
                if (!hasOwnProp(this, '_weekdaysRegex')) {
                    computeWeekdaysParse.call(this);
                }
                if (isStrict) {
                    return this._weekdaysShortStrictRegex;
                } else {
                    return this._weekdaysShortRegex;
                }
            } else {
                if (!hasOwnProp(this, '_weekdaysShortRegex')) {
                    this._weekdaysShortRegex = defaultWeekdaysShortRegex;
                }
                return this._weekdaysShortStrictRegex && isStrict ?
                    this._weekdaysShortStrictRegex : this._weekdaysShortRegex;
            }
        }

        var defaultWeekdaysMinRegex = matchWord;
        function weekdaysMinRegex (isStrict) {
            if (this._weekdaysParseExact) {
                if (!hasOwnProp(this, '_weekdaysRegex')) {
                    computeWeekdaysParse.call(this);
                }
                if (isStrict) {
                    return this._weekdaysMinStrictRegex;
                } else {
                    return this._weekdaysMinRegex;
                }
            } else {
                if (!hasOwnProp(this, '_weekdaysMinRegex')) {
                    this._weekdaysMinRegex = defaultWeekdaysMinRegex;
                }
                return this._weekdaysMinStrictRegex && isStrict ?
                    this._weekdaysMinStrictRegex : this._weekdaysMinRegex;
            }
        }

        function computeWeekdaysParse () {
            function cmpLenRev(a, b) {
                return b.length - a.length;
            }

            var minPieces = [], shortPieces = [], longPieces = [], mixedPieces = [],
                i, mom, minp, shortp, longp;
            for (i = 0; i < 7; i++) {
                // make the regex if we don't have it already
                mom = createUTC([2000, 1]).day(i);
                minp = this.weekdaysMin(mom, '');
                shortp = this.weekdaysShort(mom, '');
                longp = this.weekdays(mom, '');
                minPieces.push(minp);
                shortPieces.push(shortp);
                longPieces.push(longp);
                mixedPieces.push(minp);
                mixedPieces.push(shortp);
                mixedPieces.push(longp);
            }
            // Sorting makes sure if one weekday (or abbr) is a prefix of another it
            // will match the longer piece.
            minPieces.sort(cmpLenRev);
            shortPieces.sort(cmpLenRev);
            longPieces.sort(cmpLenRev);
            mixedPieces.sort(cmpLenRev);
            for (i = 0; i < 7; i++) {
                shortPieces[i] = regexEscape(shortPieces[i]);
                longPieces[i] = regexEscape(longPieces[i]);
                mixedPieces[i] = regexEscape(mixedPieces[i]);
            }

            this._weekdaysRegex = new RegExp('^(' + mixedPieces.join('|') + ')', 'i');
            this._weekdaysShortRegex = this._weekdaysRegex;
            this._weekdaysMinRegex = this._weekdaysRegex;

            this._weekdaysStrictRegex = new RegExp('^(' + longPieces.join('|') + ')', 'i');
            this._weekdaysShortStrictRegex = new RegExp('^(' + shortPieces.join('|') + ')', 'i');
            this._weekdaysMinStrictRegex = new RegExp('^(' + minPieces.join('|') + ')', 'i');
        }

        // FORMATTING

        function hFormat() {
            return this.hours() % 12 || 12;
        }

        function kFormat() {
            return this.hours() || 24;
        }

        addFormatToken('H', ['HH', 2], 0, 'hour');
        addFormatToken('h', ['hh', 2], 0, hFormat);
        addFormatToken('k', ['kk', 2], 0, kFormat);

        addFormatToken('hmm', 0, 0, function () {
            return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2);
        });

        addFormatToken('hmmss', 0, 0, function () {
            return '' + hFormat.apply(this) + zeroFill(this.minutes(), 2) +
                zeroFill(this.seconds(), 2);
        });

        addFormatToken('Hmm', 0, 0, function () {
            return '' + this.hours() + zeroFill(this.minutes(), 2);
        });

        addFormatToken('Hmmss', 0, 0, function () {
            return '' + this.hours() + zeroFill(this.minutes(), 2) +
                zeroFill(this.seconds(), 2);
        });

        function meridiem (token, lowercase) {
            addFormatToken(token, 0, 0, function () {
                return this.localeData().meridiem(this.hours(), this.minutes(), lowercase);
            });
        }

        meridiem('a', true);
        meridiem('A', false);

        // ALIASES

        addUnitAlias('hour', 'h');

        // PRIORITY
        addUnitPriority('hour', 13);

        // PARSING

        function matchMeridiem (isStrict, locale) {
            return locale._meridiemParse;
        }

        addRegexToken('a',  matchMeridiem);
        addRegexToken('A',  matchMeridiem);
        addRegexToken('H',  match1to2);
        addRegexToken('h',  match1to2);
        addRegexToken('k',  match1to2);
        addRegexToken('HH', match1to2, match2);
        addRegexToken('hh', match1to2, match2);
        addRegexToken('kk', match1to2, match2);

        addRegexToken('hmm', match3to4);
        addRegexToken('hmmss', match5to6);
        addRegexToken('Hmm', match3to4);
        addRegexToken('Hmmss', match5to6);

        addParseToken(['H', 'HH'], HOUR);
        addParseToken(['k', 'kk'], function (input, array, config) {
            var kInput = toInt(input);
            array[HOUR] = kInput === 24 ? 0 : kInput;
        });
        addParseToken(['a', 'A'], function (input, array, config) {
            config._isPm = config._locale.isPM(input);
            config._meridiem = input;
        });
        addParseToken(['h', 'hh'], function (input, array, config) {
            array[HOUR] = toInt(input);
            getParsingFlags(config).bigHour = true;
        });
        addParseToken('hmm', function (input, array, config) {
            var pos = input.length - 2;
            array[HOUR] = toInt(input.substr(0, pos));
            array[MINUTE] = toInt(input.substr(pos));
            getParsingFlags(config).bigHour = true;
        });
        addParseToken('hmmss', function (input, array, config) {
            var pos1 = input.length - 4;
            var pos2 = input.length - 2;
            array[HOUR] = toInt(input.substr(0, pos1));
            array[MINUTE] = toInt(input.substr(pos1, 2));
            array[SECOND] = toInt(input.substr(pos2));
            getParsingFlags(config).bigHour = true;
        });
        addParseToken('Hmm', function (input, array, config) {
            var pos = input.length - 2;
            array[HOUR] = toInt(input.substr(0, pos));
            array[MINUTE] = toInt(input.substr(pos));
        });
        addParseToken('Hmmss', function (input, array, config) {
            var pos1 = input.length - 4;
            var pos2 = input.length - 2;
            array[HOUR] = toInt(input.substr(0, pos1));
            array[MINUTE] = toInt(input.substr(pos1, 2));
            array[SECOND] = toInt(input.substr(pos2));
        });

        // LOCALES

        function localeIsPM (input) {
            // IE8 Quirks Mode & IE7 Standards Mode do not allow accessing strings like arrays
            // Using charAt should be more compatible.
            return ((input + '').toLowerCase().charAt(0) === 'p');
        }

        var defaultLocaleMeridiemParse = /[ap]\.?m?\.?/i;
        function localeMeridiem (hours, minutes, isLower) {
            if (hours > 11) {
                return isLower ? 'pm' : 'PM';
            } else {
                return isLower ? 'am' : 'AM';
            }
        }

        // MOMENTS

        // Setting the hour should keep the time, because the user explicitly
        // specified which hour they want. So trying to maintain the same hour (in
        // a new timezone) makes sense. Adding/subtracting hours does not follow
        // this rule.
        var getSetHour = makeGetSet('Hours', true);

        var baseConfig = {
            calendar: defaultCalendar,
            longDateFormat: defaultLongDateFormat,
            invalidDate: defaultInvalidDate,
            ordinal: defaultOrdinal,
            dayOfMonthOrdinalParse: defaultDayOfMonthOrdinalParse,
            relativeTime: defaultRelativeTime,

            months: defaultLocaleMonths,
            monthsShort: defaultLocaleMonthsShort,

            week: defaultLocaleWeek,

            weekdays: defaultLocaleWeekdays,
            weekdaysMin: defaultLocaleWeekdaysMin,
            weekdaysShort: defaultLocaleWeekdaysShort,

            meridiemParse: defaultLocaleMeridiemParse
        };

        // internal storage for locale config files
        var locales = {};
        var localeFamilies = {};
        var globalLocale;

        function normalizeLocale(key) {
            return key ? key.toLowerCase().replace('_', '-') : key;
        }

        // pick the locale from the array
        // try ['en-au', 'en-gb'] as 'en-au', 'en-gb', 'en', as in move through the list trying each
        // substring from most specific to least, but move to the next array item if it's a more specific variant than the current root
        function chooseLocale(names) {
            var i = 0, j, next, locale, split;

            while (i < names.length) {
                split = normalizeLocale(names[i]).split('-');
                j = split.length;
                next = normalizeLocale(names[i + 1]);
                next = next ? next.split('-') : null;
                while (j > 0) {
                    locale = loadLocale(split.slice(0, j).join('-'));
                    if (locale) {
                        return locale;
                    }
                    if (next && next.length >= j && compareArrays(split, next, true) >= j - 1) {
                        //the next array item is better than a shallower substring of this one
                        break;
                    }
                    j--;
                }
                i++;
            }
            return globalLocale;
        }

        function loadLocale(name) {
            var oldLocale = null;
            // TODO: Find a better way to register and load all the locales in Node
            if (!locales[name] && (typeof module !== 'undefined') &&
                    module && module.exports) {
                try {
                    oldLocale = globalLocale._abbr;
                    var aliasedRequire = require;
                    aliasedRequire('./locale/' + name);
                    getSetGlobalLocale(oldLocale);
                } catch (e) {}
            }
            return locales[name];
        }

        // This function will load locale and then set the global locale.  If
        // no arguments are passed in, it will simply return the current global
        // locale key.
        function getSetGlobalLocale (key, values) {
            var data;
            if (key) {
                if (isUndefined(values)) {
                    data = getLocale(key);
                }
                else {
                    data = defineLocale(key, values);
                }

                if (data) {
                    // moment.duration._locale = moment._locale = data;
                    globalLocale = data;
                }
                else {
                    if ((typeof console !==  'undefined') && console.warn) {
                        //warn user if arguments are passed but the locale could not be set
                        console.warn('Locale ' + key +  ' not found. Did you forget to load it?');
                    }
                }
            }

            return globalLocale._abbr;
        }

        function defineLocale (name, config) {
            if (config !== null) {
                var locale, parentConfig = baseConfig;
                config.abbr = name;
                if (locales[name] != null) {
                    deprecateSimple('defineLocaleOverride',
                            'use moment.updateLocale(localeName, config) to change ' +
                            'an existing locale. moment.defineLocale(localeName, ' +
                            'config) should only be used for creating a new locale ' +
                            'See http://momentjs.com/guides/#/warnings/define-locale/ for more info.');
                    parentConfig = locales[name]._config;
                } else if (config.parentLocale != null) {
                    if (locales[config.parentLocale] != null) {
                        parentConfig = locales[config.parentLocale]._config;
                    } else {
                        locale = loadLocale(config.parentLocale);
                        if (locale != null) {
                            parentConfig = locale._config;
                        } else {
                            if (!localeFamilies[config.parentLocale]) {
                                localeFamilies[config.parentLocale] = [];
                            }
                            localeFamilies[config.parentLocale].push({
                                name: name,
                                config: config
                            });
                            return null;
                        }
                    }
                }
                locales[name] = new Locale(mergeConfigs(parentConfig, config));

                if (localeFamilies[name]) {
                    localeFamilies[name].forEach(function (x) {
                        defineLocale(x.name, x.config);
                    });
                }

                // backwards compat for now: also set the locale
                // make sure we set the locale AFTER all child locales have been
                // created, so we won't end up with the child locale set.
                getSetGlobalLocale(name);

                return locales[name];
            } else {
                // useful for testing
                delete locales[name];
                return null;
            }
        }

        function updateLocale(name, config) {
            if (config != null) {
                var locale, tmpLocale, parentConfig = baseConfig;
                // MERGE
                tmpLocale = loadLocale(name);
                if (tmpLocale != null) {
                    parentConfig = tmpLocale._config;
                }
                config = mergeConfigs(parentConfig, config);
                locale = new Locale(config);
                locale.parentLocale = locales[name];
                locales[name] = locale;

                // backwards compat for now: also set the locale
                getSetGlobalLocale(name);
            } else {
                // pass null for config to unupdate, useful for tests
                if (locales[name] != null) {
                    if (locales[name].parentLocale != null) {
                        locales[name] = locales[name].parentLocale;
                    } else if (locales[name] != null) {
                        delete locales[name];
                    }
                }
            }
            return locales[name];
        }

        // returns locale data
        function getLocale (key) {
            var locale;

            if (key && key._locale && key._locale._abbr) {
                key = key._locale._abbr;
            }

            if (!key) {
                return globalLocale;
            }

            if (!isArray(key)) {
                //short-circuit everything else
                locale = loadLocale(key);
                if (locale) {
                    return locale;
                }
                key = [key];
            }

            return chooseLocale(key);
        }

        function listLocales() {
            return keys(locales);
        }

        function checkOverflow (m) {
            var overflow;
            var a = m._a;

            if (a && getParsingFlags(m).overflow === -2) {
                overflow =
                    a[MONTH]       < 0 || a[MONTH]       > 11  ? MONTH :
                    a[DATE]        < 1 || a[DATE]        > daysInMonth(a[YEAR], a[MONTH]) ? DATE :
                    a[HOUR]        < 0 || a[HOUR]        > 24 || (a[HOUR] === 24 && (a[MINUTE] !== 0 || a[SECOND] !== 0 || a[MILLISECOND] !== 0)) ? HOUR :
                    a[MINUTE]      < 0 || a[MINUTE]      > 59  ? MINUTE :
                    a[SECOND]      < 0 || a[SECOND]      > 59  ? SECOND :
                    a[MILLISECOND] < 0 || a[MILLISECOND] > 999 ? MILLISECOND :
                    -1;

                if (getParsingFlags(m)._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
                    overflow = DATE;
                }
                if (getParsingFlags(m)._overflowWeeks && overflow === -1) {
                    overflow = WEEK;
                }
                if (getParsingFlags(m)._overflowWeekday && overflow === -1) {
                    overflow = WEEKDAY;
                }

                getParsingFlags(m).overflow = overflow;
            }

            return m;
        }

        // Pick the first defined of two or three arguments.
        function defaults(a, b, c) {
            if (a != null) {
                return a;
            }
            if (b != null) {
                return b;
            }
            return c;
        }

        function currentDateArray(config) {
            // hooks is actually the exported moment object
            var nowValue = new Date(hooks.now());
            if (config._useUTC) {
                return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
            }
            return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
        }

        // convert an array to a date.
        // the array should mirror the parameters below
        // note: all values past the year are optional and will default to the lowest possible value.
        // [year, month, day , hour, minute, second, millisecond]
        function configFromArray (config) {
            var i, date, input = [], currentDate, expectedWeekday, yearToUse;

            if (config._d) {
                return;
            }

            currentDate = currentDateArray(config);

            //compute day of the year from weeks and weekdays
            if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
                dayOfYearFromWeekInfo(config);
            }

            //if the day of the year is set, figure out what it is
            if (config._dayOfYear != null) {
                yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);

                if (config._dayOfYear > daysInYear(yearToUse) || config._dayOfYear === 0) {
                    getParsingFlags(config)._overflowDayOfYear = true;
                }

                date = createUTCDate(yearToUse, 0, config._dayOfYear);
                config._a[MONTH] = date.getUTCMonth();
                config._a[DATE] = date.getUTCDate();
            }

            // Default to current date.
            // * if no year, month, day of month are given, default to today
            // * if day of month is given, default month and year
            // * if month is given, default only year
            // * if year is given, don't default anything
            for (i = 0; i < 3 && config._a[i] == null; ++i) {
                config._a[i] = input[i] = currentDate[i];
            }

            // Zero out whatever was not defaulted, including time
            for (; i < 7; i++) {
                config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
            }

            // Check for 24:00:00.000
            if (config._a[HOUR] === 24 &&
                    config._a[MINUTE] === 0 &&
                    config._a[SECOND] === 0 &&
                    config._a[MILLISECOND] === 0) {
                config._nextDay = true;
                config._a[HOUR] = 0;
            }

            config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
            expectedWeekday = config._useUTC ? config._d.getUTCDay() : config._d.getDay();

            // Apply timezone offset from input. The actual utcOffset can be changed
            // with parseZone.
            if (config._tzm != null) {
                config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
            }

            if (config._nextDay) {
                config._a[HOUR] = 24;
            }

            // check for mismatching day of week
            if (config._w && typeof config._w.d !== 'undefined' && config._w.d !== expectedWeekday) {
                getParsingFlags(config).weekdayMismatch = true;
            }
        }

        function dayOfYearFromWeekInfo(config) {
            var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow;

            w = config._w;
            if (w.GG != null || w.W != null || w.E != null) {
                dow = 1;
                doy = 4;

                // TODO: We need to take the current isoWeekYear, but that depends on
                // how we interpret now (local, utc, fixed offset). So create
                // a now version of current config (take local/utc/offset flags, and
                // create now).
                weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(createLocal(), 1, 4).year);
                week = defaults(w.W, 1);
                weekday = defaults(w.E, 1);
                if (weekday < 1 || weekday > 7) {
                    weekdayOverflow = true;
                }
            } else {
                dow = config._locale._week.dow;
                doy = config._locale._week.doy;

                var curWeek = weekOfYear(createLocal(), dow, doy);

                weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);

                // Default to current week.
                week = defaults(w.w, curWeek.week);

                if (w.d != null) {
                    // weekday -- low day numbers are considered next week
                    weekday = w.d;
                    if (weekday < 0 || weekday > 6) {
                        weekdayOverflow = true;
                    }
                } else if (w.e != null) {
                    // local weekday -- counting starts from beginning of week
                    weekday = w.e + dow;
                    if (w.e < 0 || w.e > 6) {
                        weekdayOverflow = true;
                    }
                } else {
                    // default to beginning of week
                    weekday = dow;
                }
            }
            if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
                getParsingFlags(config)._overflowWeeks = true;
            } else if (weekdayOverflow != null) {
                getParsingFlags(config)._overflowWeekday = true;
            } else {
                temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
                config._a[YEAR] = temp.year;
                config._dayOfYear = temp.dayOfYear;
            }
        }

        // iso 8601 regex
        // 0000-00-00 0000-W00 or 0000-W00-0 + T + 00 or 00:00 or 00:00:00 or 00:00:00.000 + +00:00 or +0000 or +00)
        var extendedIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})-(?:\d\d-\d\d|W\d\d-\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?::\d\d(?::\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/;
        var basicIsoRegex = /^\s*((?:[+-]\d{6}|\d{4})(?:\d\d\d\d|W\d\d\d|W\d\d|\d\d\d|\d\d))(?:(T| )(\d\d(?:\d\d(?:\d\d(?:[.,]\d+)?)?)?)([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/;

        var tzRegex = /Z|[+-]\d\d(?::?\d\d)?/;

        var isoDates = [
            ['YYYYYY-MM-DD', /[+-]\d{6}-\d\d-\d\d/],
            ['YYYY-MM-DD', /\d{4}-\d\d-\d\d/],
            ['GGGG-[W]WW-E', /\d{4}-W\d\d-\d/],
            ['GGGG-[W]WW', /\d{4}-W\d\d/, false],
            ['YYYY-DDD', /\d{4}-\d{3}/],
            ['YYYY-MM', /\d{4}-\d\d/, false],
            ['YYYYYYMMDD', /[+-]\d{10}/],
            ['YYYYMMDD', /\d{8}/],
            // YYYYMM is NOT allowed by the standard
            ['GGGG[W]WWE', /\d{4}W\d{3}/],
            ['GGGG[W]WW', /\d{4}W\d{2}/, false],
            ['YYYYDDD', /\d{7}/]
        ];

        // iso time formats and regexes
        var isoTimes = [
            ['HH:mm:ss.SSSS', /\d\d:\d\d:\d\d\.\d+/],
            ['HH:mm:ss,SSSS', /\d\d:\d\d:\d\d,\d+/],
            ['HH:mm:ss', /\d\d:\d\d:\d\d/],
            ['HH:mm', /\d\d:\d\d/],
            ['HHmmss.SSSS', /\d\d\d\d\d\d\.\d+/],
            ['HHmmss,SSSS', /\d\d\d\d\d\d,\d+/],
            ['HHmmss', /\d\d\d\d\d\d/],
            ['HHmm', /\d\d\d\d/],
            ['HH', /\d\d/]
        ];

        var aspNetJsonRegex = /^\/?Date\((\-?\d+)/i;

        // date from iso format
        function configFromISO(config) {
            var i, l,
                string = config._i,
                match = extendedIsoRegex.exec(string) || basicIsoRegex.exec(string),
                allowTime, dateFormat, timeFormat, tzFormat;

            if (match) {
                getParsingFlags(config).iso = true;

                for (i = 0, l = isoDates.length; i < l; i++) {
                    if (isoDates[i][1].exec(match[1])) {
                        dateFormat = isoDates[i][0];
                        allowTime = isoDates[i][2] !== false;
                        break;
                    }
                }
                if (dateFormat == null) {
                    config._isValid = false;
                    return;
                }
                if (match[3]) {
                    for (i = 0, l = isoTimes.length; i < l; i++) {
                        if (isoTimes[i][1].exec(match[3])) {
                            // match[2] should be 'T' or space
                            timeFormat = (match[2] || ' ') + isoTimes[i][0];
                            break;
                        }
                    }
                    if (timeFormat == null) {
                        config._isValid = false;
                        return;
                    }
                }
                if (!allowTime && timeFormat != null) {
                    config._isValid = false;
                    return;
                }
                if (match[4]) {
                    if (tzRegex.exec(match[4])) {
                        tzFormat = 'Z';
                    } else {
                        config._isValid = false;
                        return;
                    }
                }
                config._f = dateFormat + (timeFormat || '') + (tzFormat || '');
                configFromStringAndFormat(config);
            } else {
                config._isValid = false;
            }
        }

        // RFC 2822 regex: For details see https://tools.ietf.org/html/rfc2822#section-3.3
        var rfc2822 = /^(?:(Mon|Tue|Wed|Thu|Fri|Sat|Sun),?\s)?(\d{1,2})\s(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\s(\d{2,4})\s(\d\d):(\d\d)(?::(\d\d))?\s(?:(UT|GMT|[ECMP][SD]T)|([Zz])|([+-]\d{4}))$/;

        function extractFromRFC2822Strings(yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr) {
            var result = [
                untruncateYear(yearStr),
                defaultLocaleMonthsShort.indexOf(monthStr),
                parseInt(dayStr, 10),
                parseInt(hourStr, 10),
                parseInt(minuteStr, 10)
            ];

            if (secondStr) {
                result.push(parseInt(secondStr, 10));
            }

            return result;
        }

        function untruncateYear(yearStr) {
            var year = parseInt(yearStr, 10);
            if (year <= 49) {
                return 2000 + year;
            } else if (year <= 999) {
                return 1900 + year;
            }
            return year;
        }

        function preprocessRFC2822(s) {
            // Remove comments and folding whitespace and replace multiple-spaces with a single space
            return s.replace(/\([^)]*\)|[\n\t]/g, ' ').replace(/(\s\s+)/g, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, '');
        }

        function checkWeekday(weekdayStr, parsedInput, config) {
            if (weekdayStr) {
                // TODO: Replace the vanilla JS Date object with an indepentent day-of-week check.
                var weekdayProvided = defaultLocaleWeekdaysShort.indexOf(weekdayStr),
                    weekdayActual = new Date(parsedInput[0], parsedInput[1], parsedInput[2]).getDay();
                if (weekdayProvided !== weekdayActual) {
                    getParsingFlags(config).weekdayMismatch = true;
                    config._isValid = false;
                    return false;
                }
            }
            return true;
        }

        var obsOffsets = {
            UT: 0,
            GMT: 0,
            EDT: -4 * 60,
            EST: -5 * 60,
            CDT: -5 * 60,
            CST: -6 * 60,
            MDT: -6 * 60,
            MST: -7 * 60,
            PDT: -7 * 60,
            PST: -8 * 60
        };

        function calculateOffset(obsOffset, militaryOffset, numOffset) {
            if (obsOffset) {
                return obsOffsets[obsOffset];
            } else if (militaryOffset) {
                // the only allowed military tz is Z
                return 0;
            } else {
                var hm = parseInt(numOffset, 10);
                var m = hm % 100, h = (hm - m) / 100;
                return h * 60 + m;
            }
        }

        // date and time from ref 2822 format
        function configFromRFC2822(config) {
            var match = rfc2822.exec(preprocessRFC2822(config._i));
            if (match) {
                var parsedArray = extractFromRFC2822Strings(match[4], match[3], match[2], match[5], match[6], match[7]);
                if (!checkWeekday(match[1], parsedArray, config)) {
                    return;
                }

                config._a = parsedArray;
                config._tzm = calculateOffset(match[8], match[9], match[10]);

                config._d = createUTCDate.apply(null, config._a);
                config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);

                getParsingFlags(config).rfc2822 = true;
            } else {
                config._isValid = false;
            }
        }

        // date from iso format or fallback
        function configFromString(config) {
            var matched = aspNetJsonRegex.exec(config._i);

            if (matched !== null) {
                config._d = new Date(+matched[1]);
                return;
            }

            configFromISO(config);
            if (config._isValid === false) {
                delete config._isValid;
            } else {
                return;
            }

            configFromRFC2822(config);
            if (config._isValid === false) {
                delete config._isValid;
            } else {
                return;
            }

            // Final attempt, use Input Fallback
            hooks.createFromInputFallback(config);
        }

        hooks.createFromInputFallback = deprecate(
            'value provided is not in a recognized RFC2822 or ISO format. moment construction falls back to js Date(), ' +
            'which is not reliable across all browsers and versions. Non RFC2822/ISO date formats are ' +
            'discouraged and will be removed in an upcoming major release. Please refer to ' +
            'http://momentjs.com/guides/#/warnings/js-date/ for more info.',
            function (config) {
                config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
            }
        );

        // constant that refers to the ISO standard
        hooks.ISO_8601 = function () {};

        // constant that refers to the RFC 2822 form
        hooks.RFC_2822 = function () {};

        // date from string and format string
        function configFromStringAndFormat(config) {
            // TODO: Move this to another part of the creation flow to prevent circular deps
            if (config._f === hooks.ISO_8601) {
                configFromISO(config);
                return;
            }
            if (config._f === hooks.RFC_2822) {
                configFromRFC2822(config);
                return;
            }
            config._a = [];
            getParsingFlags(config).empty = true;

            // This array is used to make a Date, either with `new Date` or `Date.UTC`
            var string = '' + config._i,
                i, parsedInput, tokens, token, skipped,
                stringLength = string.length,
                totalParsedInputLength = 0;

            tokens = expandFormat(config._f, config._locale).match(formattingTokens) || [];

            for (i = 0; i < tokens.length; i++) {
                token = tokens[i];
                parsedInput = (string.match(getParseRegexForToken(token, config)) || [])[0];
                // console.log('token', token, 'parsedInput', parsedInput,
                //         'regex', getParseRegexForToken(token, config));
                if (parsedInput) {
                    skipped = string.substr(0, string.indexOf(parsedInput));
                    if (skipped.length > 0) {
                        getParsingFlags(config).unusedInput.push(skipped);
                    }
                    string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
                    totalParsedInputLength += parsedInput.length;
                }
                // don't parse if it's not a known token
                if (formatTokenFunctions[token]) {
                    if (parsedInput) {
                        getParsingFlags(config).empty = false;
                    }
                    else {
                        getParsingFlags(config).unusedTokens.push(token);
                    }
                    addTimeToArrayFromToken(token, parsedInput, config);
                }
                else if (config._strict && !parsedInput) {
                    getParsingFlags(config).unusedTokens.push(token);
                }
            }

            // add remaining unparsed input length to the string
            getParsingFlags(config).charsLeftOver = stringLength - totalParsedInputLength;
            if (string.length > 0) {
                getParsingFlags(config).unusedInput.push(string);
            }

            // clear _12h flag if hour is <= 12
            if (config._a[HOUR] <= 12 &&
                getParsingFlags(config).bigHour === true &&
                config._a[HOUR] > 0) {
                getParsingFlags(config).bigHour = undefined;
            }

            getParsingFlags(config).parsedDateParts = config._a.slice(0);
            getParsingFlags(config).meridiem = config._meridiem;
            // handle meridiem
            config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR], config._meridiem);

            configFromArray(config);
            checkOverflow(config);
        }

        function meridiemFixWrap (locale, hour, meridiem) {
            var isPm;

            if (meridiem == null) {
                // nothing to do
                return hour;
            }
            if (locale.meridiemHour != null) {
                return locale.meridiemHour(hour, meridiem);
            } else if (locale.isPM != null) {
                // Fallback
                isPm = locale.isPM(meridiem);
                if (isPm && hour < 12) {
                    hour += 12;
                }
                if (!isPm && hour === 12) {
                    hour = 0;
                }
                return hour;
            } else {
                // this is not supposed to happen
                return hour;
            }
        }

        // date from string and array of format strings
        function configFromStringAndArray(config) {
            var tempConfig,
                bestMoment,

                scoreToBeat,
                i,
                currentScore;

            if (config._f.length === 0) {
                getParsingFlags(config).invalidFormat = true;
                config._d = new Date(NaN);
                return;
            }

            for (i = 0; i < config._f.length; i++) {
                currentScore = 0;
                tempConfig = copyConfig({}, config);
                if (config._useUTC != null) {
                    tempConfig._useUTC = config._useUTC;
                }
                tempConfig._f = config._f[i];
                configFromStringAndFormat(tempConfig);

                if (!isValid(tempConfig)) {
                    continue;
                }

                // if there is any input that was not parsed add a penalty for that format
                currentScore += getParsingFlags(tempConfig).charsLeftOver;

                //or tokens
                currentScore += getParsingFlags(tempConfig).unusedTokens.length * 10;

                getParsingFlags(tempConfig).score = currentScore;

                if (scoreToBeat == null || currentScore < scoreToBeat) {
                    scoreToBeat = currentScore;
                    bestMoment = tempConfig;
                }
            }

            extend(config, bestMoment || tempConfig);
        }

        function configFromObject(config) {
            if (config._d) {
                return;
            }

            var i = normalizeObjectUnits(config._i);
            config._a = map([i.year, i.month, i.day || i.date, i.hour, i.minute, i.second, i.millisecond], function (obj) {
                return obj && parseInt(obj, 10);
            });

            configFromArray(config);
        }

        function createFromConfig (config) {
            var res = new Moment(checkOverflow(prepareConfig(config)));
            if (res._nextDay) {
                // Adding is smart enough around DST
                res.add(1, 'd');
                res._nextDay = undefined;
            }

            return res;
        }

        function prepareConfig (config) {
            var input = config._i,
                format = config._f;

            config._locale = config._locale || getLocale(config._l);

            if (input === null || (format === undefined && input === '')) {
                return createInvalid({nullInput: true});
            }

            if (typeof input === 'string') {
                config._i = input = config._locale.preparse(input);
            }

            if (isMoment(input)) {
                return new Moment(checkOverflow(input));
            } else if (isDate(input)) {
                config._d = input;
            } else if (isArray(format)) {
                configFromStringAndArray(config);
            } else if (format) {
                configFromStringAndFormat(config);
            }  else {
                configFromInput(config);
            }

            if (!isValid(config)) {
                config._d = null;
            }

            return config;
        }

        function configFromInput(config) {
            var input = config._i;
            if (isUndefined(input)) {
                config._d = new Date(hooks.now());
            } else if (isDate(input)) {
                config._d = new Date(input.valueOf());
            } else if (typeof input === 'string') {
                configFromString(config);
            } else if (isArray(input)) {
                config._a = map(input.slice(0), function (obj) {
                    return parseInt(obj, 10);
                });
                configFromArray(config);
            } else if (isObject(input)) {
                configFromObject(config);
            } else if (isNumber(input)) {
                // from milliseconds
                config._d = new Date(input);
            } else {
                hooks.createFromInputFallback(config);
            }
        }

        function createLocalOrUTC (input, format, locale, strict, isUTC) {
            var c = {};

            if (locale === true || locale === false) {
                strict = locale;
                locale = undefined;
            }

            if ((isObject(input) && isObjectEmpty(input)) ||
                    (isArray(input) && input.length === 0)) {
                input = undefined;
            }
            // object construction must be done this way.
            // https://github.com/moment/moment/issues/1423
            c._isAMomentObject = true;
            c._useUTC = c._isUTC = isUTC;
            c._l = locale;
            c._i = input;
            c._f = format;
            c._strict = strict;

            return createFromConfig(c);
        }

        function createLocal (input, format, locale, strict) {
            return createLocalOrUTC(input, format, locale, strict, false);
        }

        var prototypeMin = deprecate(
            'moment().min is deprecated, use moment.max instead. http://momentjs.com/guides/#/warnings/min-max/',
            function () {
                var other = createLocal.apply(null, arguments);
                if (this.isValid() && other.isValid()) {
                    return other < this ? this : other;
                } else {
                    return createInvalid();
                }
            }
        );

        var prototypeMax = deprecate(
            'moment().max is deprecated, use moment.min instead. http://momentjs.com/guides/#/warnings/min-max/',
            function () {
                var other = createLocal.apply(null, arguments);
                if (this.isValid() && other.isValid()) {
                    return other > this ? this : other;
                } else {
                    return createInvalid();
                }
            }
        );

        // Pick a moment m from moments so that m[fn](other) is true for all
        // other. This relies on the function fn to be transitive.
        //
        // moments should either be an array of moment objects or an array, whose
        // first element is an array of moment objects.
        function pickBy(fn, moments) {
            var res, i;
            if (moments.length === 1 && isArray(moments[0])) {
                moments = moments[0];
            }
            if (!moments.length) {
                return createLocal();
            }
            res = moments[0];
            for (i = 1; i < moments.length; ++i) {
                if (!moments[i].isValid() || moments[i][fn](res)) {
                    res = moments[i];
                }
            }
            return res;
        }

        // TODO: Use [].sort instead?
        function min () {
            var args = [].slice.call(arguments, 0);

            return pickBy('isBefore', args);
        }

        function max () {
            var args = [].slice.call(arguments, 0);

            return pickBy('isAfter', args);
        }

        var now = function () {
            return Date.now ? Date.now() : +(new Date());
        };

        var ordering = ['year', 'quarter', 'month', 'week', 'day', 'hour', 'minute', 'second', 'millisecond'];

        function isDurationValid(m) {
            for (var key in m) {
                if (!(indexOf.call(ordering, key) !== -1 && (m[key] == null || !isNaN(m[key])))) {
                    return false;
                }
            }

            var unitHasDecimal = false;
            for (var i = 0; i < ordering.length; ++i) {
                if (m[ordering[i]]) {
                    if (unitHasDecimal) {
                        return false; // only allow non-integers for smallest unit
                    }
                    if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
                        unitHasDecimal = true;
                    }
                }
            }

            return true;
        }

        function isValid$1() {
            return this._isValid;
        }

        function createInvalid$1() {
            return createDuration(NaN);
        }

        function Duration (duration) {
            var normalizedInput = normalizeObjectUnits(duration),
                years = normalizedInput.year || 0,
                quarters = normalizedInput.quarter || 0,
                months = normalizedInput.month || 0,
                weeks = normalizedInput.week || normalizedInput.isoWeek || 0,
                days = normalizedInput.day || 0,
                hours = normalizedInput.hour || 0,
                minutes = normalizedInput.minute || 0,
                seconds = normalizedInput.second || 0,
                milliseconds = normalizedInput.millisecond || 0;

            this._isValid = isDurationValid(normalizedInput);

            // representation for dateAddRemove
            this._milliseconds = +milliseconds +
                seconds * 1e3 + // 1000
                minutes * 6e4 + // 1000 * 60
                hours * 1000 * 60 * 60; //using 1000 * 60 * 60 instead of 36e5 to avoid floating point rounding errors https://github.com/moment/moment/issues/2978
            // Because of dateAddRemove treats 24 hours as different from a
            // day when working around DST, we need to store them separately
            this._days = +days +
                weeks * 7;
            // It is impossible to translate months into days without knowing
            // which months you are are talking about, so we have to store
            // it separately.
            this._months = +months +
                quarters * 3 +
                years * 12;

            this._data = {};

            this._locale = getLocale();

            this._bubble();
        }

        function isDuration (obj) {
            return obj instanceof Duration;
        }

        function absRound (number) {
            if (number < 0) {
                return Math.round(-1 * number) * -1;
            } else {
                return Math.round(number);
            }
        }

        // FORMATTING

        function offset (token, separator) {
            addFormatToken(token, 0, 0, function () {
                var offset = this.utcOffset();
                var sign = '+';
                if (offset < 0) {
                    offset = -offset;
                    sign = '-';
                }
                return sign + zeroFill(~~(offset / 60), 2) + separator + zeroFill(~~(offset) % 60, 2);
            });
        }

        offset('Z', ':');
        offset('ZZ', '');

        // PARSING

        addRegexToken('Z',  matchShortOffset);
        addRegexToken('ZZ', matchShortOffset);
        addParseToken(['Z', 'ZZ'], function (input, array, config) {
            config._useUTC = true;
            config._tzm = offsetFromString(matchShortOffset, input);
        });

        // HELPERS

        // timezone chunker
        // '+10:00' > ['10',  '00']
        // '-1530'  > ['-15', '30']
        var chunkOffset = /([\+\-]|\d\d)/gi;

        function offsetFromString(matcher, string) {
            var matches = (string || '').match(matcher);

            if (matches === null) {
                return null;
            }

            var chunk   = matches[matches.length - 1] || [];
            var parts   = (chunk + '').match(chunkOffset) || ['-', 0, 0];
            var minutes = +(parts[1] * 60) + toInt(parts[2]);

            return minutes === 0 ?
              0 :
              parts[0] === '+' ? minutes : -minutes;
        }

        // Return a moment from input, that is local/utc/zone equivalent to model.
        function cloneWithOffset(input, model) {
            var res, diff;
            if (model._isUTC) {
                res = model.clone();
                diff = (isMoment(input) || isDate(input) ? input.valueOf() : createLocal(input).valueOf()) - res.valueOf();
                // Use low-level api, because this fn is low-level api.
                res._d.setTime(res._d.valueOf() + diff);
                hooks.updateOffset(res, false);
                return res;
            } else {
                return createLocal(input).local();
            }
        }

        function getDateOffset (m) {
            // On Firefox.24 Date#getTimezoneOffset returns a floating point.
            // https://github.com/moment/moment/pull/1871
            return -Math.round(m._d.getTimezoneOffset() / 15) * 15;
        }

        // HOOKS

        // This function will be called whenever a moment is mutated.
        // It is intended to keep the offset in sync with the timezone.
        hooks.updateOffset = function () {};

        // MOMENTS

        // keepLocalTime = true means only change the timezone, without
        // affecting the local hour. So 5:31:26 +0300 --[utcOffset(2, true)]-->
        // 5:31:26 +0200 It is possible that 5:31:26 doesn't exist with offset
        // +0200, so we adjust the time as needed, to be valid.
        //
        // Keeping the time actually adds/subtracts (one hour)
        // from the actual represented time. That is why we call updateOffset
        // a second time. In case it wants us to change the offset again
        // _changeInProgress == true case, then we have to adjust, because
        // there is no such time in the given timezone.
        function getSetOffset (input, keepLocalTime, keepMinutes) {
            var offset = this._offset || 0,
                localAdjust;
            if (!this.isValid()) {
                return input != null ? this : NaN;
            }
            if (input != null) {
                if (typeof input === 'string') {
                    input = offsetFromString(matchShortOffset, input);
                    if (input === null) {
                        return this;
                    }
                } else if (Math.abs(input) < 16 && !keepMinutes) {
                    input = input * 60;
                }
                if (!this._isUTC && keepLocalTime) {
                    localAdjust = getDateOffset(this);
                }
                this._offset = input;
                this._isUTC = true;
                if (localAdjust != null) {
                    this.add(localAdjust, 'm');
                }
                if (offset !== input) {
                    if (!keepLocalTime || this._changeInProgress) {
                        addSubtract(this, createDuration(input - offset, 'm'), 1, false);
                    } else if (!this._changeInProgress) {
                        this._changeInProgress = true;
                        hooks.updateOffset(this, true);
                        this._changeInProgress = null;
                    }
                }
                return this;
            } else {
                return this._isUTC ? offset : getDateOffset(this);
            }
        }

        function getSetZone (input, keepLocalTime) {
            if (input != null) {
                if (typeof input !== 'string') {
                    input = -input;
                }

                this.utcOffset(input, keepLocalTime);

                return this;
            } else {
                return -this.utcOffset();
            }
        }

        function setOffsetToUTC (keepLocalTime) {
            return this.utcOffset(0, keepLocalTime);
        }

        function setOffsetToLocal (keepLocalTime) {
            if (this._isUTC) {
                this.utcOffset(0, keepLocalTime);
                this._isUTC = false;

                if (keepLocalTime) {
                    this.subtract(getDateOffset(this), 'm');
                }
            }
            return this;
        }

        function setOffsetToParsedOffset () {
            if (this._tzm != null) {
                this.utcOffset(this._tzm, false, true);
            } else if (typeof this._i === 'string') {
                var tZone = offsetFromString(matchOffset, this._i);
                if (tZone != null) {
                    this.utcOffset(tZone);
                }
                else {
                    this.utcOffset(0, true);
                }
            }
            return this;
        }

        function hasAlignedHourOffset (input) {
            if (!this.isValid()) {
                return false;
            }
            input = input ? createLocal(input).utcOffset() : 0;

            return (this.utcOffset() - input) % 60 === 0;
        }

        function isDaylightSavingTime () {
            return (
                this.utcOffset() > this.clone().month(0).utcOffset() ||
                this.utcOffset() > this.clone().month(5).utcOffset()
            );
        }

        function isDaylightSavingTimeShifted () {
            if (!isUndefined(this._isDSTShifted)) {
                return this._isDSTShifted;
            }

            var c = {};

            copyConfig(c, this);
            c = prepareConfig(c);

            if (c._a) {
                var other = c._isUTC ? createUTC(c._a) : createLocal(c._a);
                this._isDSTShifted = this.isValid() &&
                    compareArrays(c._a, other.toArray()) > 0;
            } else {
                this._isDSTShifted = false;
            }

            return this._isDSTShifted;
        }

        function isLocal () {
            return this.isValid() ? !this._isUTC : false;
        }

        function isUtcOffset () {
            return this.isValid() ? this._isUTC : false;
        }

        function isUtc () {
            return this.isValid() ? this._isUTC && this._offset === 0 : false;
        }

        // ASP.NET json date format regex
        var aspNetRegex = /^(\-|\+)?(?:(\d*)[. ])?(\d+)\:(\d+)(?:\:(\d+)(\.\d*)?)?$/;

        // from http://docs.closure-library.googlecode.com/git/closure_goog_date_date.js.source.html
        // somewhat more in line with 4.4.3.2 2004 spec, but allows decimal anywhere
        // and further modified to allow for strings containing both week and day
        var isoRegex = /^(-|\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/;

        function createDuration (input, key) {
            var duration = input,
                // matching against regexp is expensive, do it on demand
                match = null,
                sign,
                ret,
                diffRes;

            if (isDuration(input)) {
                duration = {
                    ms : input._milliseconds,
                    d  : input._days,
                    M  : input._months
                };
            } else if (isNumber(input)) {
                duration = {};
                if (key) {
                    duration[key] = input;
                } else {
                    duration.milliseconds = input;
                }
            } else if (!!(match = aspNetRegex.exec(input))) {
                sign = (match[1] === '-') ? -1 : 1;
                duration = {
                    y  : 0,
                    d  : toInt(match[DATE])                         * sign,
                    h  : toInt(match[HOUR])                         * sign,
                    m  : toInt(match[MINUTE])                       * sign,
                    s  : toInt(match[SECOND])                       * sign,
                    ms : toInt(absRound(match[MILLISECOND] * 1000)) * sign // the millisecond decimal point is included in the match
                };
            } else if (!!(match = isoRegex.exec(input))) {
                sign = (match[1] === '-') ? -1 : 1;
                duration = {
                    y : parseIso(match[2], sign),
                    M : parseIso(match[3], sign),
                    w : parseIso(match[4], sign),
                    d : parseIso(match[5], sign),
                    h : parseIso(match[6], sign),
                    m : parseIso(match[7], sign),
                    s : parseIso(match[8], sign)
                };
            } else if (duration == null) {// checks for null or undefined
                duration = {};
            } else if (typeof duration === 'object' && ('from' in duration || 'to' in duration)) {
                diffRes = momentsDifference(createLocal(duration.from), createLocal(duration.to));

                duration = {};
                duration.ms = diffRes.milliseconds;
                duration.M = diffRes.months;
            }

            ret = new Duration(duration);

            if (isDuration(input) && hasOwnProp(input, '_locale')) {
                ret._locale = input._locale;
            }

            return ret;
        }

        createDuration.fn = Duration.prototype;
        createDuration.invalid = createInvalid$1;

        function parseIso (inp, sign) {
            // We'd normally use ~~inp for this, but unfortunately it also
            // converts floats to ints.
            // inp may be undefined, so careful calling replace on it.
            var res = inp && parseFloat(inp.replace(',', '.'));
            // apply sign while we're at it
            return (isNaN(res) ? 0 : res) * sign;
        }

        function positiveMomentsDifference(base, other) {
            var res = {};

            res.months = other.month() - base.month() +
                (other.year() - base.year()) * 12;
            if (base.clone().add(res.months, 'M').isAfter(other)) {
                --res.months;
            }

            res.milliseconds = +other - +(base.clone().add(res.months, 'M'));

            return res;
        }

        function momentsDifference(base, other) {
            var res;
            if (!(base.isValid() && other.isValid())) {
                return {milliseconds: 0, months: 0};
            }

            other = cloneWithOffset(other, base);
            if (base.isBefore(other)) {
                res = positiveMomentsDifference(base, other);
            } else {
                res = positiveMomentsDifference(other, base);
                res.milliseconds = -res.milliseconds;
                res.months = -res.months;
            }

            return res;
        }

        // TODO: remove 'name' arg after deprecation is removed
        function createAdder(direction, name) {
            return function (val, period) {
                var dur, tmp;
                //invert the arguments, but complain about it
                if (period !== null && !isNaN(+period)) {
                    deprecateSimple(name, 'moment().' + name  + '(period, number) is deprecated. Please use moment().' + name + '(number, period). ' +
                    'See http://momentjs.com/guides/#/warnings/add-inverted-param/ for more info.');
                    tmp = val; val = period; period = tmp;
                }

                val = typeof val === 'string' ? +val : val;
                dur = createDuration(val, period);
                addSubtract(this, dur, direction);
                return this;
            };
        }

        function addSubtract (mom, duration, isAdding, updateOffset) {
            var milliseconds = duration._milliseconds,
                days = absRound(duration._days),
                months = absRound(duration._months);

            if (!mom.isValid()) {
                // No op
                return;
            }

            updateOffset = updateOffset == null ? true : updateOffset;

            if (months) {
                setMonth(mom, get(mom, 'Month') + months * isAdding);
            }
            if (days) {
                set$1(mom, 'Date', get(mom, 'Date') + days * isAdding);
            }
            if (milliseconds) {
                mom._d.setTime(mom._d.valueOf() + milliseconds * isAdding);
            }
            if (updateOffset) {
                hooks.updateOffset(mom, days || months);
            }
        }

        var add      = createAdder(1, 'add');
        var subtract = createAdder(-1, 'subtract');

        function getCalendarFormat(myMoment, now) {
            var diff = myMoment.diff(now, 'days', true);
            return diff < -6 ? 'sameElse' :
                    diff < -1 ? 'lastWeek' :
                    diff < 0 ? 'lastDay' :
                    diff < 1 ? 'sameDay' :
                    diff < 2 ? 'nextDay' :
                    diff < 7 ? 'nextWeek' : 'sameElse';
        }

        function calendar$1 (time, formats) {
            // We want to compare the start of today, vs this.
            // Getting start-of-today depends on whether we're local/utc/offset or not.
            var now = time || createLocal(),
                sod = cloneWithOffset(now, this).startOf('day'),
                format = hooks.calendarFormat(this, sod) || 'sameElse';

            var output = formats && (isFunction(formats[format]) ? formats[format].call(this, now) : formats[format]);

            return this.format(output || this.localeData().calendar(format, this, createLocal(now)));
        }

        function clone () {
            return new Moment(this);
        }

        function isAfter (input, units) {
            var localInput = isMoment(input) ? input : createLocal(input);
            if (!(this.isValid() && localInput.isValid())) {
                return false;
            }
            units = normalizeUnits(units) || 'millisecond';
            if (units === 'millisecond') {
                return this.valueOf() > localInput.valueOf();
            } else {
                return localInput.valueOf() < this.clone().startOf(units).valueOf();
            }
        }

        function isBefore (input, units) {
            var localInput = isMoment(input) ? input : createLocal(input);
            if (!(this.isValid() && localInput.isValid())) {
                return false;
            }
            units = normalizeUnits(units) || 'millisecond';
            if (units === 'millisecond') {
                return this.valueOf() < localInput.valueOf();
            } else {
                return this.clone().endOf(units).valueOf() < localInput.valueOf();
            }
        }

        function isBetween (from, to, units, inclusivity) {
            var localFrom = isMoment(from) ? from : createLocal(from),
                localTo = isMoment(to) ? to : createLocal(to);
            if (!(this.isValid() && localFrom.isValid() && localTo.isValid())) {
                return false;
            }
            inclusivity = inclusivity || '()';
            return (inclusivity[0] === '(' ? this.isAfter(localFrom, units) : !this.isBefore(localFrom, units)) &&
                (inclusivity[1] === ')' ? this.isBefore(localTo, units) : !this.isAfter(localTo, units));
        }

        function isSame (input, units) {
            var localInput = isMoment(input) ? input : createLocal(input),
                inputMs;
            if (!(this.isValid() && localInput.isValid())) {
                return false;
            }
            units = normalizeUnits(units) || 'millisecond';
            if (units === 'millisecond') {
                return this.valueOf() === localInput.valueOf();
            } else {
                inputMs = localInput.valueOf();
                return this.clone().startOf(units).valueOf() <= inputMs && inputMs <= this.clone().endOf(units).valueOf();
            }
        }

        function isSameOrAfter (input, units) {
            return this.isSame(input, units) || this.isAfter(input, units);
        }

        function isSameOrBefore (input, units) {
            return this.isSame(input, units) || this.isBefore(input, units);
        }

        function diff (input, units, asFloat) {
            var that,
                zoneDelta,
                output;

            if (!this.isValid()) {
                return NaN;
            }

            that = cloneWithOffset(input, this);

            if (!that.isValid()) {
                return NaN;
            }

            zoneDelta = (that.utcOffset() - this.utcOffset()) * 6e4;

            units = normalizeUnits(units);

            switch (units) {
                case 'year': output = monthDiff(this, that) / 12; break;
                case 'month': output = monthDiff(this, that); break;
                case 'quarter': output = monthDiff(this, that) / 3; break;
                case 'second': output = (this - that) / 1e3; break; // 1000
                case 'minute': output = (this - that) / 6e4; break; // 1000 * 60
                case 'hour': output = (this - that) / 36e5; break; // 1000 * 60 * 60
                case 'day': output = (this - that - zoneDelta) / 864e5; break; // 1000 * 60 * 60 * 24, negate dst
                case 'week': output = (this - that - zoneDelta) / 6048e5; break; // 1000 * 60 * 60 * 24 * 7, negate dst
                default: output = this - that;
            }

            return asFloat ? output : absFloor(output);
        }

        function monthDiff (a, b) {
            // difference in months
            var wholeMonthDiff = ((b.year() - a.year()) * 12) + (b.month() - a.month()),
                // b is in (anchor - 1 month, anchor + 1 month)
                anchor = a.clone().add(wholeMonthDiff, 'months'),
                anchor2, adjust;

            if (b - anchor < 0) {
                anchor2 = a.clone().add(wholeMonthDiff - 1, 'months');
                // linear across the month
                adjust = (b - anchor) / (anchor - anchor2);
            } else {
                anchor2 = a.clone().add(wholeMonthDiff + 1, 'months');
                // linear across the month
                adjust = (b - anchor) / (anchor2 - anchor);
            }

            //check for negative zero, return zero if negative zero
            return -(wholeMonthDiff + adjust) || 0;
        }

        hooks.defaultFormat = 'YYYY-MM-DDTHH:mm:ssZ';
        hooks.defaultFormatUtc = 'YYYY-MM-DDTHH:mm:ss[Z]';

        function toString () {
            return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
        }

        function toISOString(keepOffset) {
            if (!this.isValid()) {
                return null;
            }
            var utc = keepOffset !== true;
            var m = utc ? this.clone().utc() : this;
            if (m.year() < 0 || m.year() > 9999) {
                return formatMoment(m, utc ? 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYYYY-MM-DD[T]HH:mm:ss.SSSZ');
            }
            if (isFunction(Date.prototype.toISOString)) {
                // native implementation is ~50x faster, use it when we can
                if (utc) {
                    return this.toDate().toISOString();
                } else {
                    return new Date(this.valueOf() + this.utcOffset() * 60 * 1000).toISOString().replace('Z', formatMoment(m, 'Z'));
                }
            }
            return formatMoment(m, utc ? 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]' : 'YYYY-MM-DD[T]HH:mm:ss.SSSZ');
        }

        /**
         * Return a human readable representation of a moment that can
         * also be evaluated to get a new moment which is the same
         *
         * @link https://nodejs.org/dist/latest/docs/api/util.html#util_custom_inspect_function_on_objects
         */
        function inspect () {
            if (!this.isValid()) {
                return 'moment.invalid(/* ' + this._i + ' */)';
            }
            var func = 'moment';
            var zone = '';
            if (!this.isLocal()) {
                func = this.utcOffset() === 0 ? 'moment.utc' : 'moment.parseZone';
                zone = 'Z';
            }
            var prefix = '[' + func + '("]';
            var year = (0 <= this.year() && this.year() <= 9999) ? 'YYYY' : 'YYYYYY';
            var datetime = '-MM-DD[T]HH:mm:ss.SSS';
            var suffix = zone + '[")]';

            return this.format(prefix + year + datetime + suffix);
        }

        function format (inputString) {
            if (!inputString) {
                inputString = this.isUtc() ? hooks.defaultFormatUtc : hooks.defaultFormat;
            }
            var output = formatMoment(this, inputString);
            return this.localeData().postformat(output);
        }

        function from (time, withoutSuffix) {
            if (this.isValid() &&
                    ((isMoment(time) && time.isValid()) ||
                     createLocal(time).isValid())) {
                return createDuration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
            } else {
                return this.localeData().invalidDate();
            }
        }

        function fromNow (withoutSuffix) {
            return this.from(createLocal(), withoutSuffix);
        }

        function to (time, withoutSuffix) {
            if (this.isValid() &&
                    ((isMoment(time) && time.isValid()) ||
                     createLocal(time).isValid())) {
                return createDuration({from: this, to: time}).locale(this.locale()).humanize(!withoutSuffix);
            } else {
                return this.localeData().invalidDate();
            }
        }

        function toNow (withoutSuffix) {
            return this.to(createLocal(), withoutSuffix);
        }

        // If passed a locale key, it will set the locale for this
        // instance.  Otherwise, it will return the locale configuration
        // variables for this instance.
        function locale (key) {
            var newLocaleData;

            if (key === undefined) {
                return this._locale._abbr;
            } else {
                newLocaleData = getLocale(key);
                if (newLocaleData != null) {
                    this._locale = newLocaleData;
                }
                return this;
            }
        }

        var lang = deprecate(
            'moment().lang() is deprecated. Instead, use moment().localeData() to get the language configuration. Use moment().locale() to change languages.',
            function (key) {
                if (key === undefined) {
                    return this.localeData();
                } else {
                    return this.locale(key);
                }
            }
        );

        function localeData () {
            return this._locale;
        }

        var MS_PER_SECOND = 1000;
        var MS_PER_MINUTE = 60 * MS_PER_SECOND;
        var MS_PER_HOUR = 60 * MS_PER_MINUTE;
        var MS_PER_400_YEARS = (365 * 400 + 97) * 24 * MS_PER_HOUR;

        // actual modulo - handles negative numbers (for dates before 1970):
        function mod$1(dividend, divisor) {
            return (dividend % divisor + divisor) % divisor;
        }

        function localStartOfDate(y, m, d) {
            // the date constructor remaps years 0-99 to 1900-1999
            if (y < 100 && y >= 0) {
                // preserve leap years using a full 400 year cycle, then reset
                return new Date(y + 400, m, d) - MS_PER_400_YEARS;
            } else {
                return new Date(y, m, d).valueOf();
            }
        }

        function utcStartOfDate(y, m, d) {
            // Date.UTC remaps years 0-99 to 1900-1999
            if (y < 100 && y >= 0) {
                // preserve leap years using a full 400 year cycle, then reset
                return Date.UTC(y + 400, m, d) - MS_PER_400_YEARS;
            } else {
                return Date.UTC(y, m, d);
            }
        }

        function startOf (units) {
            var time;
            units = normalizeUnits(units);
            if (units === undefined || units === 'millisecond' || !this.isValid()) {
                return this;
            }

            var startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;

            switch (units) {
                case 'year':
                    time = startOfDate(this.year(), 0, 1);
                    break;
                case 'quarter':
                    time = startOfDate(this.year(), this.month() - this.month() % 3, 1);
                    break;
                case 'month':
                    time = startOfDate(this.year(), this.month(), 1);
                    break;
                case 'week':
                    time = startOfDate(this.year(), this.month(), this.date() - this.weekday());
                    break;
                case 'isoWeek':
                    time = startOfDate(this.year(), this.month(), this.date() - (this.isoWeekday() - 1));
                    break;
                case 'day':
                case 'date':
                    time = startOfDate(this.year(), this.month(), this.date());
                    break;
                case 'hour':
                    time = this._d.valueOf();
                    time -= mod$1(time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE), MS_PER_HOUR);
                    break;
                case 'minute':
                    time = this._d.valueOf();
                    time -= mod$1(time, MS_PER_MINUTE);
                    break;
                case 'second':
                    time = this._d.valueOf();
                    time -= mod$1(time, MS_PER_SECOND);
                    break;
            }

            this._d.setTime(time);
            hooks.updateOffset(this, true);
            return this;
        }

        function endOf (units) {
            var time;
            units = normalizeUnits(units);
            if (units === undefined || units === 'millisecond' || !this.isValid()) {
                return this;
            }

            var startOfDate = this._isUTC ? utcStartOfDate : localStartOfDate;

            switch (units) {
                case 'year':
                    time = startOfDate(this.year() + 1, 0, 1) - 1;
                    break;
                case 'quarter':
                    time = startOfDate(this.year(), this.month() - this.month() % 3 + 3, 1) - 1;
                    break;
                case 'month':
                    time = startOfDate(this.year(), this.month() + 1, 1) - 1;
                    break;
                case 'week':
                    time = startOfDate(this.year(), this.month(), this.date() - this.weekday() + 7) - 1;
                    break;
                case 'isoWeek':
                    time = startOfDate(this.year(), this.month(), this.date() - (this.isoWeekday() - 1) + 7) - 1;
                    break;
                case 'day':
                case 'date':
                    time = startOfDate(this.year(), this.month(), this.date() + 1) - 1;
                    break;
                case 'hour':
                    time = this._d.valueOf();
                    time += MS_PER_HOUR - mod$1(time + (this._isUTC ? 0 : this.utcOffset() * MS_PER_MINUTE), MS_PER_HOUR) - 1;
                    break;
                case 'minute':
                    time = this._d.valueOf();
                    time += MS_PER_MINUTE - mod$1(time, MS_PER_MINUTE) - 1;
                    break;
                case 'second':
                    time = this._d.valueOf();
                    time += MS_PER_SECOND - mod$1(time, MS_PER_SECOND) - 1;
                    break;
            }

            this._d.setTime(time);
            hooks.updateOffset(this, true);
            return this;
        }

        function valueOf () {
            return this._d.valueOf() - ((this._offset || 0) * 60000);
        }

        function unix () {
            return Math.floor(this.valueOf() / 1000);
        }

        function toDate () {
            return new Date(this.valueOf());
        }

        function toArray () {
            var m = this;
            return [m.year(), m.month(), m.date(), m.hour(), m.minute(), m.second(), m.millisecond()];
        }

        function toObject () {
            var m = this;
            return {
                years: m.year(),
                months: m.month(),
                date: m.date(),
                hours: m.hours(),
                minutes: m.minutes(),
                seconds: m.seconds(),
                milliseconds: m.milliseconds()
            };
        }

        function toJSON () {
            // new Date(NaN).toJSON() === null
            return this.isValid() ? this.toISOString() : null;
        }

        function isValid$2 () {
            return isValid(this);
        }

        function parsingFlags () {
            return extend({}, getParsingFlags(this));
        }

        function invalidAt () {
            return getParsingFlags(this).overflow;
        }

        function creationData() {
            return {
                input: this._i,
                format: this._f,
                locale: this._locale,
                isUTC: this._isUTC,
                strict: this._strict
            };
        }

        // FORMATTING

        addFormatToken(0, ['gg', 2], 0, function () {
            return this.weekYear() % 100;
        });

        addFormatToken(0, ['GG', 2], 0, function () {
            return this.isoWeekYear() % 100;
        });

        function addWeekYearFormatToken (token, getter) {
            addFormatToken(0, [token, token.length], 0, getter);
        }

        addWeekYearFormatToken('gggg',     'weekYear');
        addWeekYearFormatToken('ggggg',    'weekYear');
        addWeekYearFormatToken('GGGG',  'isoWeekYear');
        addWeekYearFormatToken('GGGGG', 'isoWeekYear');

        // ALIASES

        addUnitAlias('weekYear', 'gg');
        addUnitAlias('isoWeekYear', 'GG');

        // PRIORITY

        addUnitPriority('weekYear', 1);
        addUnitPriority('isoWeekYear', 1);

        // PARSING

        addRegexToken('G',      matchSigned);
        addRegexToken('g',      matchSigned);
        addRegexToken('GG',     match1to2, match2);
        addRegexToken('gg',     match1to2, match2);
        addRegexToken('GGGG',   match1to4, match4);
        addRegexToken('gggg',   match1to4, match4);
        addRegexToken('GGGGG',  match1to6, match6);
        addRegexToken('ggggg',  match1to6, match6);

        addWeekParseToken(['gggg', 'ggggg', 'GGGG', 'GGGGG'], function (input, week, config, token) {
            week[token.substr(0, 2)] = toInt(input);
        });

        addWeekParseToken(['gg', 'GG'], function (input, week, config, token) {
            week[token] = hooks.parseTwoDigitYear(input);
        });

        // MOMENTS

        function getSetWeekYear (input) {
            return getSetWeekYearHelper.call(this,
                    input,
                    this.week(),
                    this.weekday(),
                    this.localeData()._week.dow,
                    this.localeData()._week.doy);
        }

        function getSetISOWeekYear (input) {
            return getSetWeekYearHelper.call(this,
                    input, this.isoWeek(), this.isoWeekday(), 1, 4);
        }

        function getISOWeeksInYear () {
            return weeksInYear(this.year(), 1, 4);
        }

        function getWeeksInYear () {
            var weekInfo = this.localeData()._week;
            return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
        }

        function getSetWeekYearHelper(input, week, weekday, dow, doy) {
            var weeksTarget;
            if (input == null) {
                return weekOfYear(this, dow, doy).year;
            } else {
                weeksTarget = weeksInYear(input, dow, doy);
                if (week > weeksTarget) {
                    week = weeksTarget;
                }
                return setWeekAll.call(this, input, week, weekday, dow, doy);
            }
        }

        function setWeekAll(weekYear, week, weekday, dow, doy) {
            var dayOfYearData = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy),
                date = createUTCDate(dayOfYearData.year, 0, dayOfYearData.dayOfYear);

            this.year(date.getUTCFullYear());
            this.month(date.getUTCMonth());
            this.date(date.getUTCDate());
            return this;
        }

        // FORMATTING

        addFormatToken('Q', 0, 'Qo', 'quarter');

        // ALIASES

        addUnitAlias('quarter', 'Q');

        // PRIORITY

        addUnitPriority('quarter', 7);

        // PARSING

        addRegexToken('Q', match1);
        addParseToken('Q', function (input, array) {
            array[MONTH] = (toInt(input) - 1) * 3;
        });

        // MOMENTS

        function getSetQuarter (input) {
            return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
        }

        // FORMATTING

        addFormatToken('D', ['DD', 2], 'Do', 'date');

        // ALIASES

        addUnitAlias('date', 'D');

        // PRIORITY
        addUnitPriority('date', 9);

        // PARSING

        addRegexToken('D',  match1to2);
        addRegexToken('DD', match1to2, match2);
        addRegexToken('Do', function (isStrict, locale) {
            // TODO: Remove "ordinalParse" fallback in next major release.
            return isStrict ?
              (locale._dayOfMonthOrdinalParse || locale._ordinalParse) :
              locale._dayOfMonthOrdinalParseLenient;
        });

        addParseToken(['D', 'DD'], DATE);
        addParseToken('Do', function (input, array) {
            array[DATE] = toInt(input.match(match1to2)[0]);
        });

        // MOMENTS

        var getSetDayOfMonth = makeGetSet('Date', true);

        // FORMATTING

        addFormatToken('DDD', ['DDDD', 3], 'DDDo', 'dayOfYear');

        // ALIASES

        addUnitAlias('dayOfYear', 'DDD');

        // PRIORITY
        addUnitPriority('dayOfYear', 4);

        // PARSING

        addRegexToken('DDD',  match1to3);
        addRegexToken('DDDD', match3);
        addParseToken(['DDD', 'DDDD'], function (input, array, config) {
            config._dayOfYear = toInt(input);
        });

        // HELPERS

        // MOMENTS

        function getSetDayOfYear (input) {
            var dayOfYear = Math.round((this.clone().startOf('day') - this.clone().startOf('year')) / 864e5) + 1;
            return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
        }

        // FORMATTING

        addFormatToken('m', ['mm', 2], 0, 'minute');

        // ALIASES

        addUnitAlias('minute', 'm');

        // PRIORITY

        addUnitPriority('minute', 14);

        // PARSING

        addRegexToken('m',  match1to2);
        addRegexToken('mm', match1to2, match2);
        addParseToken(['m', 'mm'], MINUTE);

        // MOMENTS

        var getSetMinute = makeGetSet('Minutes', false);

        // FORMATTING

        addFormatToken('s', ['ss', 2], 0, 'second');

        // ALIASES

        addUnitAlias('second', 's');

        // PRIORITY

        addUnitPriority('second', 15);

        // PARSING

        addRegexToken('s',  match1to2);
        addRegexToken('ss', match1to2, match2);
        addParseToken(['s', 'ss'], SECOND);

        // MOMENTS

        var getSetSecond = makeGetSet('Seconds', false);

        // FORMATTING

        addFormatToken('S', 0, 0, function () {
            return ~~(this.millisecond() / 100);
        });

        addFormatToken(0, ['SS', 2], 0, function () {
            return ~~(this.millisecond() / 10);
        });

        addFormatToken(0, ['SSS', 3], 0, 'millisecond');
        addFormatToken(0, ['SSSS', 4], 0, function () {
            return this.millisecond() * 10;
        });
        addFormatToken(0, ['SSSSS', 5], 0, function () {
            return this.millisecond() * 100;
        });
        addFormatToken(0, ['SSSSSS', 6], 0, function () {
            return this.millisecond() * 1000;
        });
        addFormatToken(0, ['SSSSSSS', 7], 0, function () {
            return this.millisecond() * 10000;
        });
        addFormatToken(0, ['SSSSSSSS', 8], 0, function () {
            return this.millisecond() * 100000;
        });
        addFormatToken(0, ['SSSSSSSSS', 9], 0, function () {
            return this.millisecond() * 1000000;
        });

        // ALIASES

        addUnitAlias('millisecond', 'ms');

        // PRIORITY

        addUnitPriority('millisecond', 16);

        // PARSING

        addRegexToken('S',    match1to3, match1);
        addRegexToken('SS',   match1to3, match2);
        addRegexToken('SSS',  match1to3, match3);

        var token;
        for (token = 'SSSS'; token.length <= 9; token += 'S') {
            addRegexToken(token, matchUnsigned);
        }

        function parseMs(input, array) {
            array[MILLISECOND] = toInt(('0.' + input) * 1000);
        }

        for (token = 'S'; token.length <= 9; token += 'S') {
            addParseToken(token, parseMs);
        }
        // MOMENTS

        var getSetMillisecond = makeGetSet('Milliseconds', false);

        // FORMATTING

        addFormatToken('z',  0, 0, 'zoneAbbr');
        addFormatToken('zz', 0, 0, 'zoneName');

        // MOMENTS

        function getZoneAbbr () {
            return this._isUTC ? 'UTC' : '';
        }

        function getZoneName () {
            return this._isUTC ? 'Coordinated Universal Time' : '';
        }

        var proto = Moment.prototype;

        proto.add               = add;
        proto.calendar          = calendar$1;
        proto.clone             = clone;
        proto.diff              = diff;
        proto.endOf             = endOf;
        proto.format            = format;
        proto.from              = from;
        proto.fromNow           = fromNow;
        proto.to                = to;
        proto.toNow             = toNow;
        proto.get               = stringGet;
        proto.invalidAt         = invalidAt;
        proto.isAfter           = isAfter;
        proto.isBefore          = isBefore;
        proto.isBetween         = isBetween;
        proto.isSame            = isSame;
        proto.isSameOrAfter     = isSameOrAfter;
        proto.isSameOrBefore    = isSameOrBefore;
        proto.isValid           = isValid$2;
        proto.lang              = lang;
        proto.locale            = locale;
        proto.localeData        = localeData;
        proto.max               = prototypeMax;
        proto.min               = prototypeMin;
        proto.parsingFlags      = parsingFlags;
        proto.set               = stringSet;
        proto.startOf           = startOf;
        proto.subtract          = subtract;
        proto.toArray           = toArray;
        proto.toObject          = toObject;
        proto.toDate            = toDate;
        proto.toISOString       = toISOString;
        proto.inspect           = inspect;
        proto.toJSON            = toJSON;
        proto.toString          = toString;
        proto.unix              = unix;
        proto.valueOf           = valueOf;
        proto.creationData      = creationData;
        proto.year       = getSetYear;
        proto.isLeapYear = getIsLeapYear;
        proto.weekYear    = getSetWeekYear;
        proto.isoWeekYear = getSetISOWeekYear;
        proto.quarter = proto.quarters = getSetQuarter;
        proto.month       = getSetMonth;
        proto.daysInMonth = getDaysInMonth;
        proto.week           = proto.weeks        = getSetWeek;
        proto.isoWeek        = proto.isoWeeks     = getSetISOWeek;
        proto.weeksInYear    = getWeeksInYear;
        proto.isoWeeksInYear = getISOWeeksInYear;
        proto.date       = getSetDayOfMonth;
        proto.day        = proto.days             = getSetDayOfWeek;
        proto.weekday    = getSetLocaleDayOfWeek;
        proto.isoWeekday = getSetISODayOfWeek;
        proto.dayOfYear  = getSetDayOfYear;
        proto.hour = proto.hours = getSetHour;
        proto.minute = proto.minutes = getSetMinute;
        proto.second = proto.seconds = getSetSecond;
        proto.millisecond = proto.milliseconds = getSetMillisecond;
        proto.utcOffset            = getSetOffset;
        proto.utc                  = setOffsetToUTC;
        proto.local                = setOffsetToLocal;
        proto.parseZone            = setOffsetToParsedOffset;
        proto.hasAlignedHourOffset = hasAlignedHourOffset;
        proto.isDST                = isDaylightSavingTime;
        proto.isLocal              = isLocal;
        proto.isUtcOffset          = isUtcOffset;
        proto.isUtc                = isUtc;
        proto.isUTC                = isUtc;
        proto.zoneAbbr = getZoneAbbr;
        proto.zoneName = getZoneName;
        proto.dates  = deprecate('dates accessor is deprecated. Use date instead.', getSetDayOfMonth);
        proto.months = deprecate('months accessor is deprecated. Use month instead', getSetMonth);
        proto.years  = deprecate('years accessor is deprecated. Use year instead', getSetYear);
        proto.zone   = deprecate('moment().zone is deprecated, use moment().utcOffset instead. http://momentjs.com/guides/#/warnings/zone/', getSetZone);
        proto.isDSTShifted = deprecate('isDSTShifted is deprecated. See http://momentjs.com/guides/#/warnings/dst-shifted/ for more information', isDaylightSavingTimeShifted);

        function createUnix (input) {
            return createLocal(input * 1000);
        }

        function createInZone () {
            return createLocal.apply(null, arguments).parseZone();
        }

        function preParsePostFormat (string) {
            return string;
        }

        var proto$1 = Locale.prototype;

        proto$1.calendar        = calendar;
        proto$1.longDateFormat  = longDateFormat;
        proto$1.invalidDate     = invalidDate;
        proto$1.ordinal         = ordinal;
        proto$1.preparse        = preParsePostFormat;
        proto$1.postformat      = preParsePostFormat;
        proto$1.relativeTime    = relativeTime;
        proto$1.pastFuture      = pastFuture;
        proto$1.set             = set;

        proto$1.months            =        localeMonths;
        proto$1.monthsShort       =        localeMonthsShort;
        proto$1.monthsParse       =        localeMonthsParse;
        proto$1.monthsRegex       = monthsRegex;
        proto$1.monthsShortRegex  = monthsShortRegex;
        proto$1.week = localeWeek;
        proto$1.firstDayOfYear = localeFirstDayOfYear;
        proto$1.firstDayOfWeek = localeFirstDayOfWeek;

        proto$1.weekdays       =        localeWeekdays;
        proto$1.weekdaysMin    =        localeWeekdaysMin;
        proto$1.weekdaysShort  =        localeWeekdaysShort;
        proto$1.weekdaysParse  =        localeWeekdaysParse;

        proto$1.weekdaysRegex       =        weekdaysRegex;
        proto$1.weekdaysShortRegex  =        weekdaysShortRegex;
        proto$1.weekdaysMinRegex    =        weekdaysMinRegex;

        proto$1.isPM = localeIsPM;
        proto$1.meridiem = localeMeridiem;

        function get$1 (format, index, field, setter) {
            var locale = getLocale();
            var utc = createUTC().set(setter, index);
            return locale[field](utc, format);
        }

        function listMonthsImpl (format, index, field) {
            if (isNumber(format)) {
                index = format;
                format = undefined;
            }

            format = format || '';

            if (index != null) {
                return get$1(format, index, field, 'month');
            }

            var i;
            var out = [];
            for (i = 0; i < 12; i++) {
                out[i] = get$1(format, i, field, 'month');
            }
            return out;
        }

        // ()
        // (5)
        // (fmt, 5)
        // (fmt)
        // (true)
        // (true, 5)
        // (true, fmt, 5)
        // (true, fmt)
        function listWeekdaysImpl (localeSorted, format, index, field) {
            if (typeof localeSorted === 'boolean') {
                if (isNumber(format)) {
                    index = format;
                    format = undefined;
                }

                format = format || '';
            } else {
                format = localeSorted;
                index = format;
                localeSorted = false;

                if (isNumber(format)) {
                    index = format;
                    format = undefined;
                }

                format = format || '';
            }

            var locale = getLocale(),
                shift = localeSorted ? locale._week.dow : 0;

            if (index != null) {
                return get$1(format, (index + shift) % 7, field, 'day');
            }

            var i;
            var out = [];
            for (i = 0; i < 7; i++) {
                out[i] = get$1(format, (i + shift) % 7, field, 'day');
            }
            return out;
        }

        function listMonths (format, index) {
            return listMonthsImpl(format, index, 'months');
        }

        function listMonthsShort (format, index) {
            return listMonthsImpl(format, index, 'monthsShort');
        }

        function listWeekdays (localeSorted, format, index) {
            return listWeekdaysImpl(localeSorted, format, index, 'weekdays');
        }

        function listWeekdaysShort (localeSorted, format, index) {
            return listWeekdaysImpl(localeSorted, format, index, 'weekdaysShort');
        }

        function listWeekdaysMin (localeSorted, format, index) {
            return listWeekdaysImpl(localeSorted, format, index, 'weekdaysMin');
        }

        getSetGlobalLocale('en', {
            dayOfMonthOrdinalParse: /\d{1,2}(th|st|nd|rd)/,
            ordinal : function (number) {
                var b = number % 10,
                    output = (toInt(number % 100 / 10) === 1) ? 'th' :
                    (b === 1) ? 'st' :
                    (b === 2) ? 'nd' :
                    (b === 3) ? 'rd' : 'th';
                return number + output;
            }
        });

        // Side effect imports

        hooks.lang = deprecate('moment.lang is deprecated. Use moment.locale instead.', getSetGlobalLocale);
        hooks.langData = deprecate('moment.langData is deprecated. Use moment.localeData instead.', getLocale);

        var mathAbs = Math.abs;

        function abs () {
            var data           = this._data;

            this._milliseconds = mathAbs(this._milliseconds);
            this._days         = mathAbs(this._days);
            this._months       = mathAbs(this._months);

            data.milliseconds  = mathAbs(data.milliseconds);
            data.seconds       = mathAbs(data.seconds);
            data.minutes       = mathAbs(data.minutes);
            data.hours         = mathAbs(data.hours);
            data.months        = mathAbs(data.months);
            data.years         = mathAbs(data.years);

            return this;
        }

        function addSubtract$1 (duration, input, value, direction) {
            var other = createDuration(input, value);

            duration._milliseconds += direction * other._milliseconds;
            duration._days         += direction * other._days;
            duration._months       += direction * other._months;

            return duration._bubble();
        }

        // supports only 2.0-style add(1, 's') or add(duration)
        function add$1 (input, value) {
            return addSubtract$1(this, input, value, 1);
        }

        // supports only 2.0-style subtract(1, 's') or subtract(duration)
        function subtract$1 (input, value) {
            return addSubtract$1(this, input, value, -1);
        }

        function absCeil (number) {
            if (number < 0) {
                return Math.floor(number);
            } else {
                return Math.ceil(number);
            }
        }

        function bubble () {
            var milliseconds = this._milliseconds;
            var days         = this._days;
            var months       = this._months;
            var data         = this._data;
            var seconds, minutes, hours, years, monthsFromDays;

            // if we have a mix of positive and negative values, bubble down first
            // check: https://github.com/moment/moment/issues/2166
            if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
                    (milliseconds <= 0 && days <= 0 && months <= 0))) {
                milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
                days = 0;
                months = 0;
            }

            // The following code bubbles up values, see the tests for
            // examples of what that means.
            data.milliseconds = milliseconds % 1000;

            seconds           = absFloor(milliseconds / 1000);
            data.seconds      = seconds % 60;

            minutes           = absFloor(seconds / 60);
            data.minutes      = minutes % 60;

            hours             = absFloor(minutes / 60);
            data.hours        = hours % 24;

            days += absFloor(hours / 24);

            // convert days to months
            monthsFromDays = absFloor(daysToMonths(days));
            months += monthsFromDays;
            days -= absCeil(monthsToDays(monthsFromDays));

            // 12 months -> 1 year
            years = absFloor(months / 12);
            months %= 12;

            data.days   = days;
            data.months = months;
            data.years  = years;

            return this;
        }

        function daysToMonths (days) {
            // 400 years have 146097 days (taking into account leap year rules)
            // 400 years have 12 months === 4800
            return days * 4800 / 146097;
        }

        function monthsToDays (months) {
            // the reverse of daysToMonths
            return months * 146097 / 4800;
        }

        function as (units) {
            if (!this.isValid()) {
                return NaN;
            }
            var days;
            var months;
            var milliseconds = this._milliseconds;

            units = normalizeUnits(units);

            if (units === 'month' || units === 'quarter' || units === 'year') {
                days = this._days + milliseconds / 864e5;
                months = this._months + daysToMonths(days);
                switch (units) {
                    case 'month':   return months;
                    case 'quarter': return months / 3;
                    case 'year':    return months / 12;
                }
            } else {
                // handle milliseconds separately because of floating point math errors (issue #1867)
                days = this._days + Math.round(monthsToDays(this._months));
                switch (units) {
                    case 'week'   : return days / 7     + milliseconds / 6048e5;
                    case 'day'    : return days         + milliseconds / 864e5;
                    case 'hour'   : return days * 24    + milliseconds / 36e5;
                    case 'minute' : return days * 1440  + milliseconds / 6e4;
                    case 'second' : return days * 86400 + milliseconds / 1000;
                    // Math.floor prevents floating point math errors here
                    case 'millisecond': return Math.floor(days * 864e5) + milliseconds;
                    default: throw new Error('Unknown unit ' + units);
                }
            }
        }

        // TODO: Use this.as('ms')?
        function valueOf$1 () {
            if (!this.isValid()) {
                return NaN;
            }
            return (
                this._milliseconds +
                this._days * 864e5 +
                (this._months % 12) * 2592e6 +
                toInt(this._months / 12) * 31536e6
            );
        }

        function makeAs (alias) {
            return function () {
                return this.as(alias);
            };
        }

        var asMilliseconds = makeAs('ms');
        var asSeconds      = makeAs('s');
        var asMinutes      = makeAs('m');
        var asHours        = makeAs('h');
        var asDays         = makeAs('d');
        var asWeeks        = makeAs('w');
        var asMonths       = makeAs('M');
        var asQuarters     = makeAs('Q');
        var asYears        = makeAs('y');

        function clone$1 () {
            return createDuration(this);
        }

        function get$2 (units) {
            units = normalizeUnits(units);
            return this.isValid() ? this[units + 's']() : NaN;
        }

        function makeGetter(name) {
            return function () {
                return this.isValid() ? this._data[name] : NaN;
            };
        }

        var milliseconds = makeGetter('milliseconds');
        var seconds      = makeGetter('seconds');
        var minutes      = makeGetter('minutes');
        var hours        = makeGetter('hours');
        var days         = makeGetter('days');
        var months       = makeGetter('months');
        var years        = makeGetter('years');

        function weeks () {
            return absFloor(this.days() / 7);
        }

        var round = Math.round;
        var thresholds = {
            ss: 44,         // a few seconds to seconds
            s : 45,         // seconds to minute
            m : 45,         // minutes to hour
            h : 22,         // hours to day
            d : 26,         // days to month
            M : 11          // months to year
        };

        // helper function for moment.fn.from, moment.fn.fromNow, and moment.duration.fn.humanize
        function substituteTimeAgo(string, number, withoutSuffix, isFuture, locale) {
            return locale.relativeTime(number || 1, !!withoutSuffix, string, isFuture);
        }

        function relativeTime$1 (posNegDuration, withoutSuffix, locale) {
            var duration = createDuration(posNegDuration).abs();
            var seconds  = round(duration.as('s'));
            var minutes  = round(duration.as('m'));
            var hours    = round(duration.as('h'));
            var days     = round(duration.as('d'));
            var months   = round(duration.as('M'));
            var years    = round(duration.as('y'));

            var a = seconds <= thresholds.ss && ['s', seconds]  ||
                    seconds < thresholds.s   && ['ss', seconds] ||
                    minutes <= 1             && ['m']           ||
                    minutes < thresholds.m   && ['mm', minutes] ||
                    hours   <= 1             && ['h']           ||
                    hours   < thresholds.h   && ['hh', hours]   ||
                    days    <= 1             && ['d']           ||
                    days    < thresholds.d   && ['dd', days]    ||
                    months  <= 1             && ['M']           ||
                    months  < thresholds.M   && ['MM', months]  ||
                    years   <= 1             && ['y']           || ['yy', years];

            a[2] = withoutSuffix;
            a[3] = +posNegDuration > 0;
            a[4] = locale;
            return substituteTimeAgo.apply(null, a);
        }

        // This function allows you to set the rounding function for relative time strings
        function getSetRelativeTimeRounding (roundingFunction) {
            if (roundingFunction === undefined) {
                return round;
            }
            if (typeof(roundingFunction) === 'function') {
                round = roundingFunction;
                return true;
            }
            return false;
        }

        // This function allows you to set a threshold for relative time strings
        function getSetRelativeTimeThreshold (threshold, limit) {
            if (thresholds[threshold] === undefined) {
                return false;
            }
            if (limit === undefined) {
                return thresholds[threshold];
            }
            thresholds[threshold] = limit;
            if (threshold === 's') {
                thresholds.ss = limit - 1;
            }
            return true;
        }

        function humanize (withSuffix) {
            if (!this.isValid()) {
                return this.localeData().invalidDate();
            }

            var locale = this.localeData();
            var output = relativeTime$1(this, !withSuffix, locale);

            if (withSuffix) {
                output = locale.pastFuture(+this, output);
            }

            return locale.postformat(output);
        }

        var abs$1 = Math.abs;

        function sign(x) {
            return ((x > 0) - (x < 0)) || +x;
        }

        function toISOString$1() {
            // for ISO strings we do not use the normal bubbling rules:
            //  * milliseconds bubble up until they become hours
            //  * days do not bubble at all
            //  * months bubble up until they become years
            // This is because there is no context-free conversion between hours and days
            // (think of clock changes)
            // and also not between days and months (28-31 days per month)
            if (!this.isValid()) {
                return this.localeData().invalidDate();
            }

            var seconds = abs$1(this._milliseconds) / 1000;
            var days         = abs$1(this._days);
            var months       = abs$1(this._months);
            var minutes, hours, years;

            // 3600 seconds -> 60 minutes -> 1 hour
            minutes           = absFloor(seconds / 60);
            hours             = absFloor(minutes / 60);
            seconds %= 60;
            minutes %= 60;

            // 12 months -> 1 year
            years  = absFloor(months / 12);
            months %= 12;

            // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
            var Y = years;
            var M = months;
            var D = days;
            var h = hours;
            var m = minutes;
            var s = seconds ? seconds.toFixed(3).replace(/\.?0+$/, '') : '';
            var total = this.asSeconds();

            if (!total) {
                // this is the same as C#'s (Noda) and python (isodate)...
                // but not other JS (goog.date)
                return 'P0D';
            }

            var totalSign = total < 0 ? '-' : '';
            var ymSign = sign(this._months) !== sign(total) ? '-' : '';
            var daysSign = sign(this._days) !== sign(total) ? '-' : '';
            var hmsSign = sign(this._milliseconds) !== sign(total) ? '-' : '';

            return totalSign + 'P' +
                (Y ? ymSign + Y + 'Y' : '') +
                (M ? ymSign + M + 'M' : '') +
                (D ? daysSign + D + 'D' : '') +
                ((h || m || s) ? 'T' : '') +
                (h ? hmsSign + h + 'H' : '') +
                (m ? hmsSign + m + 'M' : '') +
                (s ? hmsSign + s + 'S' : '');
        }

        var proto$2 = Duration.prototype;

        proto$2.isValid        = isValid$1;
        proto$2.abs            = abs;
        proto$2.add            = add$1;
        proto$2.subtract       = subtract$1;
        proto$2.as             = as;
        proto$2.asMilliseconds = asMilliseconds;
        proto$2.asSeconds      = asSeconds;
        proto$2.asMinutes      = asMinutes;
        proto$2.asHours        = asHours;
        proto$2.asDays         = asDays;
        proto$2.asWeeks        = asWeeks;
        proto$2.asMonths       = asMonths;
        proto$2.asQuarters     = asQuarters;
        proto$2.asYears        = asYears;
        proto$2.valueOf        = valueOf$1;
        proto$2._bubble        = bubble;
        proto$2.clone          = clone$1;
        proto$2.get            = get$2;
        proto$2.milliseconds   = milliseconds;
        proto$2.seconds        = seconds;
        proto$2.minutes        = minutes;
        proto$2.hours          = hours;
        proto$2.days           = days;
        proto$2.weeks          = weeks;
        proto$2.months         = months;
        proto$2.years          = years;
        proto$2.humanize       = humanize;
        proto$2.toISOString    = toISOString$1;
        proto$2.toString       = toISOString$1;
        proto$2.toJSON         = toISOString$1;
        proto$2.locale         = locale;
        proto$2.localeData     = localeData;

        proto$2.toIsoString = deprecate('toIsoString() is deprecated. Please use toISOString() instead (notice the capitals)', toISOString$1);
        proto$2.lang = lang;

        // Side effect imports

        // FORMATTING

        addFormatToken('X', 0, 0, 'unix');
        addFormatToken('x', 0, 0, 'valueOf');

        // PARSING

        addRegexToken('x', matchSigned);
        addRegexToken('X', matchTimestamp);
        addParseToken('X', function (input, array, config) {
            config._d = new Date(parseFloat(input, 10) * 1000);
        });
        addParseToken('x', function (input, array, config) {
            config._d = new Date(toInt(input));
        });

        // Side effect imports

        hooks.version = '2.24.0';

        setHookCallback(createLocal);

        hooks.fn                    = proto;
        hooks.min                   = min;
        hooks.max                   = max;
        hooks.now                   = now;
        hooks.utc                   = createUTC;
        hooks.unix                  = createUnix;
        hooks.months                = listMonths;
        hooks.isDate                = isDate;
        hooks.locale                = getSetGlobalLocale;
        hooks.invalid               = createInvalid;
        hooks.duration              = createDuration;
        hooks.isMoment              = isMoment;
        hooks.weekdays              = listWeekdays;
        hooks.parseZone             = createInZone;
        hooks.localeData            = getLocale;
        hooks.isDuration            = isDuration;
        hooks.monthsShort           = listMonthsShort;
        hooks.weekdaysMin           = listWeekdaysMin;
        hooks.defineLocale          = defineLocale;
        hooks.updateLocale          = updateLocale;
        hooks.locales               = listLocales;
        hooks.weekdaysShort         = listWeekdaysShort;
        hooks.normalizeUnits        = normalizeUnits;
        hooks.relativeTimeRounding  = getSetRelativeTimeRounding;
        hooks.relativeTimeThreshold = getSetRelativeTimeThreshold;
        hooks.calendarFormat        = getCalendarFormat;
        hooks.prototype             = proto;

        // currently HTML5 input type only supports 24-hour formats
        hooks.HTML5_FMT = {
            DATETIME_LOCAL: 'YYYY-MM-DDTHH:mm',             // <input type="datetime-local" />
            DATETIME_LOCAL_SECONDS: 'YYYY-MM-DDTHH:mm:ss',  // <input type="datetime-local" step="1" />
            DATETIME_LOCAL_MS: 'YYYY-MM-DDTHH:mm:ss.SSS',   // <input type="datetime-local" step="0.001" />
            DATE: 'YYYY-MM-DD',                             // <input type="date" />
            TIME: 'HH:mm',                                  // <input type="time" />
            TIME_SECONDS: 'HH:mm:ss',                       // <input type="time" step="1" />
            TIME_MS: 'HH:mm:ss.SSS',                        // <input type="time" step="0.001" />
            WEEK: 'GGGG-[W]WW',                             // <input type="week" />
            MONTH: 'YYYY-MM'                                // <input type="month" />
        };

        return hooks;

    })));