text: //! moment.js
  //! version : 2.9.0
  //! authors : Tim Wood, Iskren Chernev, Moment.js contributors
  //! license : MIT
  //! momentjs.com
  
  (function (undefined) {
      /************************************
          Constants
      ************************************/
  
      var moment,
          VERSION = '2.9.0',
          // the global-scope this is NOT the global object in Node.js
          globalScope = (typeof global !== 'undefined' && (typeof window === 'undefined' || window === global.window)) ? global : this,
          oldGlobalMoment,
          round = Math.round,
          hasOwnProperty = Object.prototype.hasOwnProperty,
          i,
  
          YEAR = 0,
          MONTH = 1,
          DATE = 2,
          HOUR = 3,
          MINUTE = 4,
          SECOND = 5,
          MILLISECOND = 6,
  
          // internal storage for locale config files
          locales = {},
  
          // extra moment internal properties (plugins register props here)
          momentProperties = [],
  
          // check for nodeJS
          hasModule = (typeof module !== 'undefined' && module && module.exports),
  
          // ASP.NET json date format regex
          aspNetJsonRegex = /^\/?Date\((\-?\d+)/i,
          aspNetTimeSpanJsonRegex = /(\-)?(?:(\d*)\.)?(\d+)\:(\d+)(?:\:(\d+)\.?(\d{3})?)?/,
  
          // 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
          isoDurationRegex = /^(-)?P(?:(?:([0-9,.]*)Y)?(?:([0-9,.]*)M)?(?:([0-9,.]*)D)?(?:T(?:([0-9,.]*)H)?(?:([0-9,.]*)M)?(?:([0-9,.]*)S)?)?|([0-9,.]*)W)$/,
  
          // format tokens
          formattingTokens = /(\[[^\[]*\])|(\\)?(Mo|MM?M?M?|Do|DDDo|DD?D?D?|ddd?d?|do?|w[o|w]?|W[o|W]?|Q|YYYYYY|YYYYY|YYYY|YY|gg(ggg?)?|GG(GGG?)?|e|E|a|A|hh?|HH?|mm?|ss?|S{1,4}|x|X|zz?|ZZ?|.)/g,
          localFormattingTokens = /(\[[^\[]*\])|(\\)?(LTS|LT|LL?L?L?|l{1,4})/g,
  
          // parsing token regexes
          parseTokenOneOrTwoDigits = /\d\d?/, // 0 - 99
          parseTokenOneToThreeDigits = /\d{1,3}/, // 0 - 999
          parseTokenOneToFourDigits = /\d{1,4}/, // 0 - 9999
          parseTokenOneToSixDigits = /[+\-]?\d{1,6}/, // -999,999 - 999,999
          parseTokenDigits = /\d+/, // nonzero number of digits
          parseTokenWord = /[0-9]*['a-z\u00A0-\u05FF\u0700-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]+|[\u0600-\u06FF\/]+(\s*?[\u0600-\u06FF]+){1,2}/i, // any word (or two) characters or numbers including two/three word month in arabic.
          parseTokenTimezone = /Z|[\+\-]\d\d:?\d\d/gi, // +00:00 -00:00 +0000 -0000 or Z
          parseTokenT = /T/i, // T (ISO separator)
          parseTokenOffsetMs = /[\+\-]?\d+/, // 1234567890123
          parseTokenTimestampMs = /[\+\-]?\d+(\.\d{1,3})?/, // 123456789 123456789.123
  
          //strict parsing regexes
          parseTokenOneDigit = /\d/, // 0 - 9
          parseTokenTwoDigits = /\d\d/, // 00 - 99
          parseTokenThreeDigits = /\d{3}/, // 000 - 999
          parseTokenFourDigits = /\d{4}/, // 0000 - 9999
          parseTokenSixDigits = /[+-]?\d{6}/, // -999,999 - 999,999
          parseTokenSignedNumber = /[+-]?\d+/, // -inf - inf
  
          // 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)
          isoRegex = /^\s*(?:[+-]\d{6}|\d{4})-(?:(\d\d-\d\d)|(W\d\d$)|(W\d\d-\d)|(\d\d\d))((T| )(\d\d(:\d\d(:\d\d(\.\d+)?)?)?)?([\+\-]\d\d(?::?\d\d)?|\s*Z)?)?$/,
  
          isoFormat = 'YYYY-MM-DDTHH:mm:ssZ',
  
          isoDates = [
              ['YYYYYY-MM-DD', /[+-]\d{6}-\d{2}-\d{2}/],
              ['YYYY-MM-DD', /\d{4}-\d{2}-\d{2}/],
              ['GGGG-[W]WW-E', /\d{4}-W\d{2}-\d/],
              ['GGGG-[W]WW', /\d{4}-W\d{2}/],
              ['YYYY-DDD', /\d{4}-\d{3}/]
          ],
  
          // iso time formats and regexes
          isoTimes = [
              ['HH:mm:ss.SSSS', /(T| )\d\d:\d\d:\d\d\.\d+/],
              ['HH:mm:ss', /(T| )\d\d:\d\d:\d\d/],
              ['HH:mm', /(T| )\d\d:\d\d/],
              ['HH', /(T| )\d\d/]
          ],
  
          // timezone chunker '+10:00' > ['10', '00'] or '-1530' > ['-', '15', '30']
          parseTimezoneChunker = /([\+\-]|\d\d)/gi,
  
          // getter and setter names
          proxyGettersAndSetters = 'Date|Hours|Minutes|Seconds|Milliseconds'.split('|'),
          unitMillisecondFactors = {
              'Milliseconds' : 1,
              'Seconds' : 1e3,
              'Minutes' : 6e4,
              'Hours' : 36e5,
              'Days' : 864e5,
              'Months' : 2592e6,
              'Years' : 31536e6
          },
  
          unitAliases = {
              ms : 'millisecond',
              s : 'second',
              m : 'minute',
              h : 'hour',
              d : 'day',
              D : 'date',
              w : 'week',
              W : 'isoWeek',
              M : 'month',
              Q : 'quarter',
              y : 'year',
              DDD : 'dayOfYear',
              e : 'weekday',
              E : 'isoWeekday',
              gg: 'weekYear',
              GG: 'isoWeekYear'
          },
  
          camelFunctions = {
              dayofyear : 'dayOfYear',
              isoweekday : 'isoWeekday',
              isoweek : 'isoWeek',
              weekyear : 'weekYear',
              isoweekyear : 'isoWeekYear'
          },
  
          // format function strings
          formatFunctions = {},
  
          // default relative time thresholds
          relativeTimeThresholds = {
              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
          },
  
          // tokens to ordinalize and pad
          ordinalizeTokens = 'DDD w W M D d'.split(' '),
          paddedTokens = 'M D H h m user w W'.split(' '),
  
          formatTokenFunctions = {
              M    : function () {
                  return this.month() + 1;
              },
              MMM  : function (format) {
                  return this.localeData().monthsShort(this, format);
              },
              MMMM : function (format) {
                  return this.localeData().months(this, format);
              },
              D    : function () {
                  return this.date();
              },
              DDD  : function () {
                  return this.dayOfYear();
              },
              d    : function () {
                  return this.day();
              },
              dd   : function (format) {
                  return this.localeData().weekdaysMin(this, format);
              },
              ddd  : function (format) {
                  return this.localeData().weekdaysShort(this, format);
              },
              dddd : function (format) {
                  return this.localeData().weekdays(this, format);
              },
              w    : function () {
                  return this.week();
              },
              W    : function () {
                  return this.isoWeek();
              },
              YY   : function () {
                  return leftZeroFill(this.year() % 100, 2);
              },
              YYYY : function () {
                  return leftZeroFill(this.year(), 4);
              },
              YYYYY : function () {
                  return leftZeroFill(this.year(), 5);
              },
              YYYYYY : function () {
                  var y = this.year(), sign = y >= 0 ? '+' : '-';
                  return sign + leftZeroFill(Math.abs(y), 6);
              },
              gg   : function () {
                  return leftZeroFill(this.weekYear() % 100, 2);
              },
              gggg : function () {
                  return leftZeroFill(this.weekYear(), 4);
              },
              ggggg : function () {
                  return leftZeroFill(this.weekYear(), 5);
              },
              GG   : function () {
                  return leftZeroFill(this.isoWeekYear() % 100, 2);
              },
              GGGG : function () {
                  return leftZeroFill(this.isoWeekYear(), 4);
              },
              GGGGG : function () {
                  return leftZeroFill(this.isoWeekYear(), 5);
              },
              e : function () {
                  return this.weekday();
              },
              E : function () {
                  return this.isoWeekday();
              },
              a    : function () {
                  return this.localeData().meridiem(this.hours(), this.minutes(), true);
              },
              A    : function () {
                  return this.localeData().meridiem(this.hours(), this.minutes(), false);
              },
              H    : function () {
                  return this.hours();
              },
              h    : function () {
                  return this.hours() % 12 || 12;
              },
              m    : function () {
                  return this.minutes();
              },
              s    : function () {
                  return this.seconds();
              },
              S    : function () {
                  return toInt(this.milliseconds() / 100);
              },
              SS   : function () {
                  return leftZeroFill(toInt(this.milliseconds() / 10), 2);
              },
              SSS  : function () {
                  return leftZeroFill(this.milliseconds(), 3);
              },
              SSSS : function () {
                  return leftZeroFill(this.milliseconds(), 3);
              },
              Z    : function () {
                  var a = this.utcOffset(),
                      b = '+';
                  if (a < 0) {
                      a = -a;
                      b = '-';
                  }
                  return b + leftZeroFill(toInt(a / 60), 2) + ':' + leftZeroFill(toInt(a) % 60, 2);
              },
              ZZ   : function () {
                  var a = this.utcOffset(),
                      b = '+';
                  if (a < 0) {
                      a = -a;
                      b = '-';
                  }
                  return b + leftZeroFill(toInt(a / 60), 2) + leftZeroFill(toInt(a) % 60, 2);
              },
              z : function () {
                  return this.zoneAbbr();
              },
              zz : function () {
                  return this.zoneName();
              },
              x    : function () {
                  return this.valueOf();
              },
              X    : function () {
                  return this.unix();
              },
              Q : function () {
                  return this.quarter();
              }
          },
  
          deprecations = {},
  
          lists = ['months', 'monthsShort', 'weekdays', 'weekdaysShort', 'weekdaysMin'],
  
          updateInProgress = false;
  
      // Pick the first defined of two or three arguments. dfl comes from
      // default.
      function dfl(a, b, c) {
          switch (arguments.length) {
              case 2: return a != null ? a : b;
              case 3: return a != null ? a : b != null ? b : c;
              default: throw new Error('Implement me');
          }
      }
  
      function hasOwnProp(a, b) {
          return hasOwnProperty.call(a, b);
      }
  
      function defaultParsingFlags() {
          // We need to deep clone this object, and es5 standard is not very
          // helpful.
          return {
              empty : false,
              unusedTokens : [],
              unusedInput : [],
              overflow : -2,
              charsLeftOver : 0,
              nullInput : false,
              invalidMonth : null,
              invalidFormat : false,
              userInvalidated : false,
              iso: false
          };
      }
  
      function printMsg(msg) {
          if (moment.suppressDeprecationWarnings === false &&
                  typeof console !== 'undefined' && console.warn) {
              console.warn('Deprecation warning: ' + msg);
          }
      }
  
      function deprecate(msg, fn) {
          var firstTime = true;
          return extend(function () {
              if (firstTime) {
                  printMsg(msg);
                  firstTime = false;
              }
              return fn.apply(this, arguments);
          }, fn);
      }
  
      function deprecateSimple(name, msg) {
          if (!deprecations[name]) {
              printMsg(msg);
              deprecations[name] = true;
          }
      }
  
      function padToken(func, count) {
          return function (a) {
              return leftZeroFill(func.call(this, a), count);
          };
      }
      function ordinalizeToken(func, period) {
          return function (a) {
              return this.localeData().ordinal(func.call(this, a), period);
          };
      }
  
      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);
          }
  
          return -(wholeMonthDiff + adjust);
      }
  
      while (ordinalizeTokens.length) {
          i = ordinalizeTokens.pop();
          formatTokenFunctions[i + 'o'] = ordinalizeToken(formatTokenFunctions[i], i);
      }
      while (paddedTokens.length) {
          i = paddedTokens.pop();
          formatTokenFunctions[i + i] = padToken(formatTokenFunctions[i], 2);
      }
      formatTokenFunctions.DDDD = padToken(formatTokenFunctions.DDD, 3);
  
  
      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 {
              // thie is not supposed to happen
              return hour;
          }
      }
  
      /************************************
          Constructors
      ************************************/
  
      function Locale() {
      }
  
      // Moment prototype object
      function Moment(config, skipOverflow) {
          if (skipOverflow !== false) {
              checkOverflow(config);
          }
          copyConfig(this, config);
          this._d = new Date(+config._d);
          // Prevent infinite loop in case updateOffset creates new moment
          // objects.
          if (updateInProgress === false) {
              updateInProgress = true;
              moment.updateOffset(this);
              updateInProgress = false;
          }
      }
  
      // Duration Constructor
      function Duration(duration) {
          var normalizedInput = normalizeObjectUnits(duration),
              years = normalizedInput.year || 0,
              quarters = normalizedInput.quarter || 0,
              months = normalizedInput.month || 0,
              weeks = normalizedInput.week || 0,
              days = normalizedInput.day || 0,
              hours = normalizedInput.hour || 0,
              minutes = normalizedInput.minute || 0,
              seconds = normalizedInput.second || 0,
              milliseconds = normalizedInput.millisecond || 0;
  
          // representation for dateAddRemove
          this._milliseconds = +milliseconds +
              seconds * 1e3 + // 1000
              minutes * 6e4 + // 1000 * 60
              hours * 36e5; // 1000 * 60 * 60
          // 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 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 = moment.localeData();
  
          this._bubble();
      }
  
      /************************************
          Helpers
      ************************************/
  
  
      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 copyConfig(to, from) {
          var i, prop, val;
  
          if (typeof from._isAMomentObject !== 'undefined') {
              to._isAMomentObject = from._isAMomentObject;
          }
          if (typeof from._i !== 'undefined') {
              to._i = from._i;
          }
          if (typeof from._f !== 'undefined') {
              to._f = from._f;
          }
          if (typeof from._l !== 'undefined') {
              to._l = from._l;
          }
          if (typeof from._strict !== 'undefined') {
              to._strict = from._strict;
          }
          if (typeof from._tzm !== 'undefined') {
              to._tzm = from._tzm;
          }
          if (typeof from._isUTC !== 'undefined') {
              to._isUTC = from._isUTC;
          }
          if (typeof from._offset !== 'undefined') {
              to._offset = from._offset;
          }
          if (typeof from._pf !== 'undefined') {
              to._pf = from._pf;
          }
          if (typeof from._locale !== 'undefined') {
              to._locale = from._locale;
          }
  
          if (momentProperties.length > 0) {
              for (i in momentProperties) {
                  prop = momentProperties[i];
                  val = from[prop];
                  if (typeof val !== 'undefined') {
                      to[prop] = val;
                  }
              }
          }
  
          return to;
      }
  
      function absRound(number) {
          if (number < 0) {
              return Math.ceil(number);
          } else {
              return Math.floor(number);
          }
      }
  
      // left zero fill a number
      // see http://jsperf.com/left-zero-filling for performance comparison
      function leftZeroFill(number, targetLength, forceSign) {
          var output = '' + Math.abs(number),
              sign = number >= 0;
  
          while (output.length < targetLength) {
              output = '0' + output;
          }
          return (sign ? (forceSign ? '+' : '') : '-') + output;
      }
  
      function positiveMomentsDifference(base, other) {
          var res = {milliseconds: 0, months: 0};
  
          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;
          other = makeAs(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).');
                  tmp = val; val = period; period = tmp;
              }
  
              val = typeof val === 'string' ? +val : val;
              dur = moment.duration(val, period);
              addOrSubtractDurationFromMoment(this, dur, direction);
              return this;
          };
      }
  
      function addOrSubtractDurationFromMoment(mom, duration, isAdding, updateOffset) {
          var milliseconds = duration._milliseconds,
              days = duration._days,
              months = duration._months;
          updateOffset = updateOffset == null ? true : updateOffset;
  
          if (milliseconds) {
              mom._d.setTime(+mom._d + milliseconds * isAdding);
          }
          if (days) {
              rawSetter(mom, 'Date', rawGetter(mom, 'Date') + days * isAdding);
          }
          if (months) {
              rawMonthSetter(mom, rawGetter(mom, 'Month') + months * isAdding);
          }
          if (updateOffset) {
              moment.updateOffset(mom, days || months);
          }
      }
  
      // check if is an array
      function isArray(input) {
          return Object.prototype.toString.call(input) === '[object Array]';
      }
  
      function isDate(input) {
          return Object.prototype.toString.call(input) === '[object Date]' ||
              input instanceof Date;
      }
  
      // 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 normalizeUnits(units) {
          if (units) {
              var lowered = units.toLowerCase().replace(/(.)s$/, '$1');
              units = unitAliases[units] || camelFunctions[lowered] || lowered;
          }
          return units;
      }
  
      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;
      }
  
      function makeList(field) {
          var count, setter;
  
          if (field.indexOf('week') === 0) {
              count = 7;
              setter = 'day';
          }
          else if (field.indexOf('month') === 0) {
              count = 12;
              setter = 'month';
          }
          else {
              return;
          }
  
          moment[field] = function (format, index) {
              var i, getter,
                  method = moment._locale[field],
                  results = [];
  
              if (typeof format === 'number') {
                  index = format;
                  format = undefined;
              }
  
              getter = function (i) {
                  var m = moment().utc().set(setter, i);
                  return method.call(moment._locale, m, format || '');
              };
  
              if (index != null) {
                  return getter(index);
              }
              else {
                  for (i = 0; i < count; i++) {
                      results.push(getter(i));
                  }
                  return results;
              }
          };
      }
  
      function toInt(argumentForCoercion) {
          var coercedNumber = +argumentForCoercion,
              value = 0;
  
          if (coercedNumber !== 0 && isFinite(coercedNumber)) {
              if (coercedNumber >= 0) {
                  value = Math.floor(coercedNumber);
              } else {
                  value = Math.ceil(coercedNumber);
              }
          }
  
          return value;
      }
  
      function daysInMonth(year, month) {
          return new Date(Date.UTC(year, month + 1, 0)).getUTCDate();
      }
  
      function weeksInYear(year, dow, doy) {
          return weekOfYear(moment([year, 11, 31 + dow - doy]), dow, doy).week;
      }
  
      function daysInYear(year) {
          return isLeapYear(year) ? 366 : 365;
      }
  
      function isLeapYear(year) {
          return (year % 4 === 0 && year % 100 !== 0) || year % 400 === 0;
      }
  
      function checkOverflow(m) {
          var overflow;
          if (m._a && m._pf.overflow === -2) {
              overflow =
                  m._a[MONTH] < 0 || m._a[MONTH] > 11 ? MONTH :
                  m._a[DATE] < 1 || m._a[DATE] > daysInMonth(m._a[YEAR], m._a[MONTH]) ? DATE :
                  m._a[HOUR] < 0 || m._a[HOUR] > 24 ||
                      (m._a[HOUR] === 24 && (m._a[MINUTE] !== 0 ||
                                             m._a[SECOND] !== 0 ||
                                             m._a[MILLISECOND] !== 0)) ? HOUR :
                  m._a[MINUTE] < 0 || m._a[MINUTE] > 59 ? MINUTE :
                  m._a[SECOND] < 0 || m._a[SECOND] > 59 ? SECOND :
                  m._a[MILLISECOND] < 0 || m._a[MILLISECOND] > 999 ? MILLISECOND :
                  -1;
  
              if (m._pf._overflowDayOfYear && (overflow < YEAR || overflow > DATE)) {
                  overflow = DATE;
              }
  
              m._pf.overflow = overflow;
          }
      }
  
      function isValid(m) {
          if (m._isValid == null) {
              m._isValid = !isNaN(m._d.getTime()) &&
                  m._pf.overflow < 0 &&
                  !m._pf.empty &&
                  !m._pf.invalidMonth &&
                  !m._pf.nullInput &&
                  !m._pf.invalidFormat &&
                  !m._pf.userInvalidated;
  
              if (m._strict) {
                  m._isValid = m._isValid &&
                      m._pf.charsLeftOver === 0 &&
                      m._pf.unusedTokens.length === 0 &&
                      m._pf.bigHour === undefined;
              }
          }
          return m._isValid;
      }
  
      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'user 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 null;
      }
  
      function loadLocale(name) {
          var oldLocale = null;
          if (!locales[name] && hasModule) {
              try {
                  oldLocale = moment.locale();
                  require('./locale/' + name);
                  // because defineLocale currently also sets the global locale, we want to undo that for lazy loaded locales
                  moment.locale(oldLocale);
              } catch (e) { }
          }
          return locales[name];
      }
  
      // Return a moment from input, that is local/utc/utcOffset equivalent to
      // model.
      function makeAs(input, model) {
          var res, diff;
          if (model._isUTC) {
              res = model.clone();
              diff = (moment.isMoment(input) || isDate(input) ?
                      +input : +moment(input)) - (+res);
              // Use low-level api, because this fn is low-level api.
              res._d.setTime(+res._d + diff);
              moment.updateOffset(res, false);
              return res;
          } else {
              return moment(input).local();
          }
      }
  
      /************************************
          Locale
      ************************************/
  
  
      extend(Locale.prototype, {
  
          set : function (config) {
              var prop, i;
              for (i in config) {
                  prop = config[i];
                  if (typeof prop === 'function') {
                      this[i] = prop;
                  } else {
                      this['_' + i] = prop;
                  }
              }
              // Lenient ordinal parsing accepts just a number in addition to
              // number + (possibly) stuff coming from _ordinalParseLenient.
              this._ordinalParseLenient = new RegExp(this._ordinalParse.source + '|' + /\d{1,2}/.source);
          },
  
          _months : 'January_February_March_April_May_June_July_August_September_October_November_December'.split('_'),
          months : function (m) {
              return this._months[m.month()];
          },
  
          _monthsShort : 'Jan_Feb_Mar_Apr_May_Jun_Jul_Aug_Sep_Oct_Nov_Dec'.split('_'),
          monthsShort : function (m) {
              return this._monthsShort[m.month()];
          },
  
          monthsParse : function (monthName, format, strict) {
              var i, mom, regex;
  
              if (!this._monthsParse) {
                  this._monthsParse = [];
                  this._longMonthsParse = [];
                  this._shortMonthsParse = [];
              }
  
              for (i = 0; i < 12; i++) {
                  // make the regex if we don't have it already
                  mom = moment.utc([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;
                  }
              }
          },
  
          _weekdays : 'Sunday_Monday_Tuesday_Wednesday_Thursday_Friday_Saturday'.split('_'),
          weekdays : function (m) {
              return this._weekdays[m.day()];
          },
  
          _weekdaysShort : 'Sun_Mon_Tue_Wed_Thu_Fri_Sat'.split('_'),
          weekdaysShort : function (m) {
              return this._weekdaysShort[m.day()];
          },
  
          _weekdaysMin : 'Su_Mo_Tu_We_Th_Fr_Sa'.split('_'),
          weekdaysMin : function (m) {
              return this._weekdaysMin[m.day()];
          },
  
          weekdaysParse : function (weekdayName) {
              var i, mom, regex;
  
              if (!this._weekdaysParse) {
                  this._weekdaysParse = [];
              }
  
              for (i = 0; i < 7; i++) {
                  // make the regex if we don't have it already
                  if (!this._weekdaysParse[i]) {
                      mom = moment([2000, 1]).day(i);
                      regex = '^' + this.weekdays(mom, '') + '|^' + this.weekdaysShort(mom, '') + '|^' + this.weekdaysMin(mom, '');
                      this._weekdaysParse[i] = new RegExp(regex.replace('.', ''), 'i');
                  }
                  // test the regex
                  if (this._weekdaysParse[i].test(weekdayName)) {
                      return i;
                  }
              }
          },
  
          _longDateFormat : {
              LTS : 'h:mm:ss A',
              LT : 'h:mm A',
              L : 'MM/DD/YYYY',
              LL : 'MMMM D, YYYY',
              LLL : 'MMMM D, YYYY LT',
              LLLL : 'dddd, MMMM D, YYYY LT'
          },
          longDateFormat : function (key) {
              var output = this._longDateFormat[key];
              if (!output && this._longDateFormat[key.toUpperCase()]) {
                  output = this._longDateFormat[key.toUpperCase()].replace(/MMMM|MM|DD|dddd/g, function (val) {
                      return val.slice(1);
                  });
                  this._longDateFormat[key] = output;
              }
              return output;
          },
  
          isPM : function (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');
          },
  
          _meridiemParse : /[ap]\.?m?\.?/i,
          meridiem : function (hours, minutes, isLower) {
              if (hours > 11) {
                  return isLower ? 'pm' : 'PM';
              } else {
                  return isLower ? 'am' : 'AM';
              }
          },
  
  
          _calendar : {
              sameDay : '[Today at] LT',
              nextDay : '[Tomorrow at] LT',
              nextWeek : 'dddd [at] LT',
              lastDay : '[Yesterday at] LT',
              lastWeek : '[Last] dddd [at] LT',
              sameElse : 'L'
          },
          calendar : function (key, mom, now) {
              var output = this._calendar[key];
              return typeof output === 'function' ? output.apply(mom, [now]) : output;
          },
  
          _relativeTime : {
              future : 'in %user',
              past : '%user ago',
              s : 'a few 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'
          },
  
          relativeTime : function (number, withoutSuffix, string, isFuture) {
              var output = this._relativeTime[string];
              return (typeof output === 'function') ?
                  output(number, withoutSuffix, string, isFuture) :
                  output.replace(/%d/i, number);
          },
  
          pastFuture : function (diff, output) {
              var format = this._relativeTime[diff > 0 ? 'future' : 'past'];
              return typeof format === 'function' ? format(output) : format.replace(/%s/i, output);
          },
  
          ordinal : function (number) {
              return this._ordinal.replace('%d', number);
          },
          _ordinal : '%d',
          _ordinalParse : /\d{1,2}/,
  
          preparse : function (string) {
              return string;
          },
  
          postformat : function (string) {
              return string;
          },
  
          week : function (mom) {
              return weekOfYear(mom, this._week.dow, this._week.doy).week;
          },
  
          _week : {
              dow : 0, // Sunday is the first day of the week.
              doy : 6  // The week that contains Jan 1st is the first week of the year.
          },
  
          firstDayOfWeek : function () {
              return this._week.dow;
          },
  
          firstDayOfYear : function () {
              return this._week.doy;
          },
  
          _invalidDate: 'Invalid date',
          invalidDate: function () {
              return this._invalidDate;
          }
      });
  
      /************************************
          Formatting
      ************************************/
  
  
      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 = '';
              for (i = 0; i < length; i++) {
                  output += array[i] instanceof Function ? 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());
  
          if (!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;
      }
  
  
      /************************************
          Parsing
      ************************************/
  
  
      // get the regex to find the next token
      function getParseRegexForToken(token, config) {
          var a, strict = config._strict;
          switch (token) {
          case 'Q':
              return parseTokenOneDigit;
          case 'DDDD':
              return parseTokenThreeDigits;
          case 'YYYY':
          case 'GGGG':
          case 'gggg':
              return strict ? parseTokenFourDigits : parseTokenOneToFourDigits;
          case 'Y':
          case 'G':
          case 'g':
              return parseTokenSignedNumber;
          case 'YYYYYY':
          case 'YYYYY':
          case 'GGGGG':
          case 'ggggg':
              return strict ? parseTokenSixDigits : parseTokenOneToSixDigits;
          case 'S':
              if (strict) {
                  return parseTokenOneDigit;
              }
              /* falls through */
          case 'SS':
              if (strict) {
                  return parseTokenTwoDigits;
              }
              /* falls through */
          case 'SSS':
              if (strict) {
                  return parseTokenThreeDigits;
              }
              /* falls through */
          case 'DDD':
              return parseTokenOneToThreeDigits;
          case 'MMM':
          case 'MMMM':
          case 'dd':
          case 'ddd':
          case 'dddd':
              return parseTokenWord;
          case 'a':
          case 'A':
              return config._locale._meridiemParse;
          case 'x':
              return parseTokenOffsetMs;
          case 'X':
              return parseTokenTimestampMs;
          case 'Z':
          case 'ZZ':
              return parseTokenTimezone;
          case 'T':
              return parseTokenT;
          case 'SSSS':
              return parseTokenDigits;
          case 'MM':
          case 'DD':
          case 'YY':
          case 'GG':
          case 'gg':
          case 'HH':
          case 'hh':
          case 'mm':
          case 'ss':
          case 'ww':
          case 'WW':
              return strict ? parseTokenTwoDigits : parseTokenOneOrTwoDigits;
          case 'M':
          case 'D':
          case 'd':
          case 'H':
          case 'h':
          case 'm':
          case 's':
          case 'w':
          case 'W':
          case 'e':
          case 'E':
              return parseTokenOneOrTwoDigits;
          case 'Do':
              return strict ? config._locale._ordinalParse : config._locale._ordinalParseLenient;
          default :
              a = new RegExp(regexpEscape(unescapeFormat(token.replace('\\', '')), 'i'));
              return a;
          }
      }
  
      function utcOffsetFromString(string) {
          string = string || '';
          var possibleTzMatches = (string.match(parseTokenTimezone) || []),
              tzChunk = possibleTzMatches[possibleTzMatches.length - 1] || [],
              parts = (tzChunk + '').match(parseTimezoneChunker) || ['-', 0, 0],
              minutes = +(parts[1] * 60) + toInt(parts[2]);
  
          return parts[0] === '+' ? minutes : -minutes;
      }
  
      // function to convert string input to date
      function addTimeToArrayFromToken(token, input, config) {
          var a, datePartArray = config._a;
  
          switch (token) {
          // QUARTER
          case 'Q':
              if (input != null) {
                  datePartArray[MONTH] = (toInt(input) - 1) * 3;
              }
              break;
          // MONTH
          case 'M' : // fall through to MM
          case 'MM' :
              if (input != null) {
                  datePartArray[MONTH] = toInt(input) - 1;
              }
              break;
          case 'MMM' : // fall through to MMMM
          case 'MMMM' :
              a = config._locale.monthsParse(input, token, config._strict);
              // if we didn't find a month name, mark the date as invalid.
              if (a != null) {
                  datePartArray[MONTH] = a;
              } else {
                  config._pf.invalidMonth = input;
              }
              break;
          // DAY OF MONTH
          case 'D' : // fall through to DD
          case 'DD' :
              if (input != null) {
                  datePartArray[DATE] = toInt(input);
              }
              break;
          case 'Do' :
              if (input != null) {
                  datePartArray[DATE] = toInt(parseInt(
                              input.match(/\d{1,2}/)[0], 10));
              }
              break;
          // DAY OF YEAR
          case 'DDD' : // fall through to DDDD
          case 'DDDD' :
              if (input != null) {
                  config._dayOfYear = toInt(input);
              }
  
              break;
          // YEAR
          case 'YY' :
              datePartArray[YEAR] = moment.parseTwoDigitYear(input);
              break;
          case 'YYYY' :
          case 'YYYYY' :
          case 'YYYYYY' :
              datePartArray[YEAR] = toInt(input);
              break;
          // AM / PM
          case 'a' : // fall through to A
          case 'A' :
              config._meridiem = input;
              // config._isPm = config._locale.isPM(input);
              break;
          // HOUR
          case 'h' : // fall through to hh
          case 'hh' :
              config._pf.bigHour = true;
              /* falls through */
          case 'H' : // fall through to HH
          case 'HH' :
              datePartArray[HOUR] = toInt(input);
              break;
          // MINUTE
          case 'm' : // fall through to mm
          case 'mm' :
              datePartArray[MINUTE] = toInt(input);
              break;
          // SECOND
          case 's' : // fall through to ss
          case 'ss' :
              datePartArray[SECOND] = toInt(input);
              break;
          // MILLISECOND
          case 'S' :
          case 'SS' :
          case 'SSS' :
          case 'SSSS' :
              datePartArray[MILLISECOND] = toInt(('0.' + input) * 1000);
              break;
          // UNIX OFFSET (MILLISECONDS)
          case 'x':
              config._d = new Date(toInt(input));
              break;
          // UNIX TIMESTAMP WITH MS
          case 'X':
              config._d = new Date(parseFloat(input) * 1000);
              break;
          // TIMEZONE
          case 'Z' : // fall through to ZZ
          case 'ZZ' :
              config._useUTC = true;
              config._tzm = utcOffsetFromString(input);
              break;
          // WEEKDAY - human
          case 'dd':
          case 'ddd':
          case 'dddd':
              a = config._locale.weekdaysParse(input);
              // if we didn't get a weekday name, mark the date as invalid
              if (a != null) {
                  config._w = config._w || {};
                  config._w['d'] = a;
              } else {
                  config._pf.invalidWeekday = input;
              }
              break;
          // WEEK, WEEK DAY - numeric
          case 'w':
          case 'ww':
          case 'W':
          case 'WW':
          case 'd':
          case 'e':
          case 'E':
              token = token.substr(0, 1);
              /* falls through */
          case 'gggg':
          case 'GGGG':
          case 'GGGGG':
              token = token.substr(0, 2);
              if (input) {
                  config._w = config._w || {};
                  config._w[token] = toInt(input);
              }
              break;
          case 'gg':
          case 'GG':
              config._w = config._w || {};
              config._w[token] = moment.parseTwoDigitYear(input);
          }
      }
  
      function dayOfYearFromWeekInfo(config) {
          var w, weekYear, week, weekday, dow, doy, temp;
  
          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 = dfl(w.GG, config._a[YEAR], weekOfYear(moment(), 1, 4).year);
              week = dfl(w.W, 1);
              weekday = dfl(w.E, 1);
          } else {
              dow = config._locale._week.dow;
              doy = config._locale._week.doy;
  
              weekYear = dfl(w.gg, config._a[YEAR], weekOfYear(moment(), dow, doy).year);
              week = dfl(w.w, 1);
  
              if (w.d != null) {
                  // weekday -- low day numbers are considered next week
                  weekday = w.d;
                  if (weekday < dow) {
                      ++week;
                  }
              } else if (w.e != null) {
                  // local weekday -- counting starts from begining of week
                  weekday = w.e + dow;
              } else {
                  // default to begining of week
                  weekday = dow;
              }
          }
          temp = dayOfYearFromWeeks(weekYear, week, weekday, doy, dow);
  
          config._a[YEAR] = temp.year;
          config._dayOfYear = temp.dayOfYear;
      }
  
      // 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 dateFromConfig(config) {
          var i, date, input = [], currentDate, 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) {
              yearToUse = dfl(config._a[YEAR], currentDate[YEAR]);
  
              if (config._dayOfYear > daysInYear(yearToUse)) {
                  config._pf._overflowDayOfYear = true;
              }
  
              date = makeUTCDate(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 ? makeUTCDate : makeDate).apply(null, input);
          // 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;
          }
      }
  
      function dateFromObject(config) {
          var normalizedInput;
  
          if (config._d) {
              return;
          }
  
          normalizedInput = normalizeObjectUnits(config._i);
          config._a = [
              normalizedInput.year,
              normalizedInput.month,
              normalizedInput.day || normalizedInput.date,
              normalizedInput.hour,
              normalizedInput.minute,
              normalizedInput.second,
              normalizedInput.millisecond
          ];
  
          dateFromConfig(config);
      }
  
      function currentDateArray(config) {
          var now = new Date();
          if (config._useUTC) {
              return [
                  now.getUTCFullYear(),
                  now.getUTCMonth(),
                  now.getUTCDate()
              ];
          } else {
              return [now.getFullYear(), now.getMonth(), now.getDate()];
          }
      }
  
      // date from string and format string
      function makeDateFromStringAndFormat(config) {
          if (config._f === moment.ISO_8601) {
              parseISO(config);
              return;
          }
  
          config._a = [];
          config._pf.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];
              if (parsedInput) {
                  skipped = string.substr(0, string.indexOf(parsedInput));
                  if (skipped.length > 0) {
                      config._pf.unusedInput.push(skipped);
                  }
                  string = string.slice(string.indexOf(parsedInput) + parsedInput.length);
                  totalParsedInputLength += parsedInput.length;
              }
              // don't parse if it'user not a known token
              if (formatTokenFunctions[token]) {
                  if (parsedInput) {
                      config._pf.empty = false;
                  }
                  else {
                      config._pf.unusedTokens.push(token);
                  }
                  addTimeToArrayFromToken(token, parsedInput, config);
              }
              else if (config._strict && !parsedInput) {
                  config._pf.unusedTokens.push(token);
              }
          }
  
          // add remaining unparsed input length to the string
          config._pf.charsLeftOver = stringLength - totalParsedInputLength;
          if (string.length > 0) {
              config._pf.unusedInput.push(string);
          }
  
          // clear _12h flag if hour is <= 12
          if (config._pf.bigHour === true && config._a[HOUR] <= 12) {
              config._pf.bigHour = undefined;
          }
          // handle meridiem
          config._a[HOUR] = meridiemFixWrap(config._locale, config._a[HOUR],
                  config._meridiem);
          dateFromConfig(config);
          checkOverflow(config);
      }
  
      function unescapeFormat(s) {
          return s.replace(/\\(\[)|\\(\])|\[([^\]\[]*)\]|\\(.)/g, function (matched, p1, p2, p3, p4) {
              return p1 || p2 || p3 || p4;
          });
      }
  
      // Code from http://stackoverflow.com/questions/3561493/is-there-a-regexp-escape-function-in-javascript
      function regexpEscape(s) {
          return s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
      }
  
      // date from string and array of format strings
      function makeDateFromStringAndArray(config) {
          var tempConfig,
              bestMoment,
  
              scoreToBeat,
              i,
              currentScore;
  
          if (config._f.length === 0) {
              config._pf.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._pf = defaultParsingFlags();
              tempConfig._f = config._f[i];
              makeDateFromStringAndFormat(tempConfig);
  
              if (!isValid(tempConfig)) {
                  continue;
              }
  
              // if there is any input that was not parsed add a penalty for that format
              currentScore += tempConfig._pf.charsLeftOver;
  
              //or tokens
              currentScore += tempConfig._pf.unusedTokens.length * 10;
  
              tempConfig._pf.score = currentScore;
  
              if (scoreToBeat == null || currentScore < scoreToBeat) {
                  scoreToBeat = currentScore;
                  bestMoment = tempConfig;
              }
          }
  
          extend(config, bestMoment || tempConfig);
      }
  
      // date from iso format
      function parseISO(config) {
          var i, l,
              string = config._i,
              match = isoRegex.exec(string);
  
          if (match) {
              config._pf.iso = true;
              for (i = 0, l = isoDates.length; i < l; i++) {
                  if (isoDates[i][1].exec(string)) {
                      // match[5] should be 'T' or undefined
                      config._f = isoDates[i][0] + (match[6] || ' ');
                      break;
                  }
              }
              for (i = 0, l = isoTimes.length; i < l; i++) {
                  if (isoTimes[i][1].exec(string)) {
                      config._f += isoTimes[i][0];
                      break;
                  }
              }
              if (string.match(parseTokenTimezone)) {
                  config._f += 'Z';
              }
              makeDateFromStringAndFormat(config);
          } else {
              config._isValid = false;
          }
      }
  
      // date from iso format or fallback
      function makeDateFromString(config) {
          parseISO(config);
          if (config._isValid === false) {
              delete config._isValid;
              moment.createFromInputFallback(config);
          }
      }
  
      function map(arr, fn) {
          var res = [], i;
          for (i = 0; i < arr.length; ++i) {
              res.push(fn(arr[i], i));
          }
          return res;
      }
  
      function makeDateFromInput(config) {
          var input = config._i, matched;
          if (input === undefined) {
              config._d = new Date();
          } else if (isDate(input)) {
              config._d = new Date(+input);
          } else if ((matched = aspNetJsonRegex.exec(input)) !== null) {
              config._d = new Date(+matched[1]);
          } else if (typeof input === 'string') {
              makeDateFromString(config);
          } else if (isArray(input)) {
              config._a = map(input.slice(0), function (obj) {
                  return parseInt(obj, 10);
              });
              dateFromConfig(config);
          } else if (typeof(input) === 'object') {
              dateFromObject(config);
          } else if (typeof(input) === 'number') {
              // from milliseconds
              config._d = new Date(input);
          } else {
              moment.createFromInputFallback(config);
          }
      }
  
      function makeDate(y, m, d, h, M, s, ms) {
          //can't just apply() to create a date:
          //http://stackoverflow.com/questions/181348/instantiating-a-javascript-object-by-calling-prototype-constructor-apply
          var date = new Date(y, m, d, h, M, s, ms);
  
          //the date constructor doesn't accept years < 1970
          if (y < 1970) {
              date.setFullYear(y);
          }
          return date;
      }
  
      function makeUTCDate(y) {
          var date = new Date(Date.UTC.apply(null, arguments));
          if (y < 1970) {
              date.setUTCFullYear(y);
          }
          return date;
      }
  
      function parseWeekday(input, locale) {
          if (typeof input === 'string') {
              if (!isNaN(input)) {
                  input = parseInt(input, 10);
              }
              else {
                  input = locale.weekdaysParse(input);
                  if (typeof input !== 'number') {
                      return null;
                  }
              }
          }
          return input;
      }
  
      /************************************
          Relative Time
      ************************************/
  
  
      // 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(posNegDuration, withoutSuffix, locale) {
          var duration = moment.duration(posNegDuration).abs(),
              seconds = round(duration.as('s')),
              minutes = round(duration.as('m')),
              hours = round(duration.as('h')),
              days = round(duration.as('d')),
              months = round(duration.as('M')),
              years = round(duration.as('y')),
  
              args = seconds < relativeTimeThresholds.s && ['s', seconds] ||
                  minutes === 1 && ['m'] ||
                  minutes < relativeTimeThresholds.m && ['mm', minutes] ||
                  hours === 1 && ['h'] ||
                  hours < relativeTimeThresholds.h && ['hh', hours] ||
                  days === 1 && ['d'] ||
                  days < relativeTimeThresholds.d && ['dd', days] ||
                  months === 1 && ['M'] ||
                  months < relativeTimeThresholds.M && ['MM', months] ||
                  years === 1 && ['y'] || ['yy', years];
  
          args[2] = withoutSuffix;
          args[3] = +posNegDuration > 0;
          args[4] = locale;
          return substituteTimeAgo.apply({}, args);
      }
  
  
      /************************************
          Week of Year
      ************************************/
  
  
      // firstDayOfWeek       0 = sun, 6 = sat
      //                      the day of the week that starts the week
      //                      (usually sunday or monday)
      // firstDayOfWeekOfYear 0 = sun, 6 = sat
      //                      the first week is the week that contains the first
      //                      of this day of the week
      //                      (eg. ISO weeks use thursday (4))
      function weekOfYear(mom, firstDayOfWeek, firstDayOfWeekOfYear) {
          var end = firstDayOfWeekOfYear - firstDayOfWeek,
              daysToDayOfWeek = firstDayOfWeekOfYear - mom.day(),
              adjustedMoment;
  
  
          if (daysToDayOfWeek > end) {
              daysToDayOfWeek -= 7;
          }
  
          if (daysToDayOfWeek < end - 7) {
              daysToDayOfWeek += 7;
          }
  
          adjustedMoment = moment(mom).add(daysToDayOfWeek, 'd');
          return {
              week: Math.ceil(adjustedMoment.dayOfYear() / 7),
              year: adjustedMoment.year()
          };
      }
  
      //http://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday
      function dayOfYearFromWeeks(year, week, weekday, firstDayOfWeekOfYear, firstDayOfWeek) {
          var d = makeUTCDate(year, 0, 1).getUTCDay(), daysToAdd, dayOfYear;
  
          d = d === 0 ? 7 : d;
          weekday = weekday != null ? weekday : firstDayOfWeek;
          daysToAdd = firstDayOfWeek - d + (d > firstDayOfWeekOfYear ? 7 : 0) - (d < firstDayOfWeek ? 7 : 0);
          dayOfYear = 7 * (week - 1) + (weekday - firstDayOfWeek) + daysToAdd + 1;
  
          return {
              year: dayOfYear > 0 ? year : year - 1,
              dayOfYear: dayOfYear > 0 ?  dayOfYear : daysInYear(year - 1) + dayOfYear
          };
      }
  
      /************************************
          Top Level Functions
      ************************************/
  
      function makeMoment(config) {
          var input = config._i,
              format = config._f,
              res;
  
          config._locale = config._locale || moment.localeData(config._l);
  
          if (input === null || (format === undefined && input === '')) {
              return moment.invalid({nullInput: true});
          }
  
          if (typeof input === 'string') {
              config._i = input = config._locale.preparse(input);
          }
  
          if (moment.isMoment(input)) {
              return new Moment(input, true);
          } else if (format) {
              if (isArray(format)) {
                  makeDateFromStringAndArray(config);
              } else {
                  makeDateFromStringAndFormat(config);
              }
          } else {
              makeDateFromInput(config);
          }
  
          res = new Moment(config);
          if (res._nextDay) {
              // Adding is smart enough around DST
              res.add(1, 'd');
              res._nextDay = undefined;
          }
  
          return res;
      }
  
      moment = function (input, format, locale, strict) {
          var c;
  
          if (typeof(locale) === 'boolean') {
              strict = locale;
              locale = undefined;
          }
          // object construction must be done this way.
          // https://github.com/moment/moment/issues/1423
          c = {};
          c._isAMomentObject = true;
          c._i = input;
          c._f = format;
          c._l = locale;
          c._strict = strict;
          c._isUTC = false;
          c._pf = defaultParsingFlags();
  
          return makeMoment(c);
      };
  
      moment.suppressDeprecationWarnings = false;
  
      moment.createFromInputFallback = deprecate(
          'moment construction falls back to js Date. This is ' +
          'discouraged and will be removed in upcoming major ' +
          'release. Please refer to ' +
          'https://github.com/moment/moment/issues/1407 for more info.',
          function (config) {
              config._d = new Date(config._i + (config._useUTC ? ' UTC' : ''));
          }
      );
  
      // 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 moment();
          }
          res = moments[0];
          for (i = 1; i < moments.length; ++i) {
              if (moments[i][fn](res)) {
                  res = moments[i];
              }
          }
          return res;
      }
  
      moment.min = function () {
          var args = [].slice.call(arguments, 0);
  
          return pickBy('isBefore', args);
      };
  
      moment.max = function () {
          var args = [].slice.call(arguments, 0);
  
          return pickBy('isAfter', args);
      };
  
      // creating with utc
      moment.utc = function (input, format, locale, strict) {
          var c;
  
          if (typeof(locale) === 'boolean') {
              strict = locale;
              locale = undefined;
          }
          // object construction must be done this way.
          // https://github.com/moment/moment/issues/1423
          c = {};
          c._isAMomentObject = true;
          c._useUTC = true;
          c._isUTC = true;
          c._l = locale;
          c._i = input;
          c._f = format;
          c._strict = strict;
          c._pf = defaultParsingFlags();
  
          return makeMoment(c).utc();
      };
  
      // creating with unix timestamp (in seconds)
      moment.unix = function (input) {
          return moment(input * 1000);
      };
  
      // duration
      moment.duration = function (input, key) {
          var duration = input,
              // matching against regexp is expensive, do it on demand
              match = null,
              sign,
              ret,
              parseIso,
              diffRes;
  
          if (moment.isDuration(input)) {
              duration = {
                  ms: input._milliseconds,
                  d: input._days,
                  M: input._months
              };
          } else if (typeof input === 'number') {
              duration = {};
              if (key) {
                  duration[key] = input;
              } else {
                  duration.milliseconds = input;
              }
          } else if (!!(match = aspNetTimeSpanJsonRegex.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(match[MILLISECOND]) * sign
              };
          } else if (!!(match = isoDurationRegex.exec(input))) {
              sign = (match[1] === '-') ? -1 : 1;
              parseIso = function (inp) {
                  // 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;
              };
              duration = {
                  y: parseIso(match[2]),
                  M: parseIso(match[3]),
                  d: parseIso(match[4]),
                  h: parseIso(match[5]),
                  m: parseIso(match[6]),
                  s: parseIso(match[7]),
                  w: parseIso(match[8])
              };
          } else if (duration == null) {// checks for null or undefined
              duration = {};
          } else if (typeof duration === 'object' &&
                  ('from' in duration || 'to' in duration)) {
              diffRes = momentsDifference(moment(duration.from), moment(duration.to));
  
              duration = {};
              duration.ms = diffRes.milliseconds;
              duration.M = diffRes.months;
          }
  
          ret = new Duration(duration);
  
          if (moment.isDuration(input) && hasOwnProp(input, '_locale')) {
              ret._locale = input._locale;
          }
  
          return ret;
      };
  
      // version number
      moment.version = VERSION;
  
      // default format
      moment.defaultFormat = isoFormat;
  
      // constant that refers to the ISO standard
      moment.ISO_8601 = function () {};
  
      // Plugins that add properties should also add the key here (null value),
      // so we can properly clone ourselves.
      moment.momentProperties = momentProperties;
  
      // This function will be called whenever a moment is mutated.
      // It is intended to keep the offset in sync with the timezone.
      moment.updateOffset = function () {};
  
      // This function allows you to set a threshold for relative time strings
      moment.relativeTimeThreshold = function (threshold, limit) {
          if (relativeTimeThresholds[threshold] === undefined) {
              return false;
          }
          if (limit === undefined) {
              return relativeTimeThresholds[threshold];
          }
          relativeTimeThresholds[threshold] = limit;
          return true;
      };
  
      moment.lang = deprecate(
          'moment.lang is deprecated. Use moment.locale instead.',
          function (key, value) {
              return moment.locale(key, value);
          }
      );
  
      // 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.
      moment.locale = function (key, values) {
          var data;
          if (key) {
              if (typeof(values) !== 'undefined') {
                  data = moment.defineLocale(key, values);
              }
              else {
                  data = moment.localeData(key);
              }
  
              if (data) {
                  moment.duration._locale = moment._locale = data;
              }
          }
  
          return moment._locale._abbr;
      };
  
      moment.defineLocale = function (name, values) {
          if (values !== null) {
              values.abbr = name;
              if (!locales[name]) {
                  locales[name] = new Locale();
              }
              locales[name].set(values);
  
              // backwards compat for now: also set the locale
              moment.locale(name);
  
              return locales[name];
          } else {
              // useful for testing
              delete locales[name];
              return null;
          }
      };
  
      moment.langData = deprecate(
          'moment.langData is deprecated. Use moment.localeData instead.',
          function (key) {
              return moment.localeData(key);
          }
      );
  
      // returns locale data
      moment.localeData = function (key) {
          var locale;
  
          if (key && key._locale && key._locale._abbr) {
              key = key._locale._abbr;
          }
  
          if (!key) {
              return moment._locale;
          }
  
          if (!isArray(key)) {
              //short-circuit everything else
              locale = loadLocale(key);
              if (locale) {
                  return locale;
              }
              key = [key];
          }
  
          return chooseLocale(key);
      };
  
      // compare moment object
      moment.isMoment = function (obj) {
          return obj instanceof Moment ||
              (obj != null && hasOwnProp(obj, '_isAMomentObject'));
      };
  
      // for typechecking Duration objects
      moment.isDuration = function (obj) {
          return obj instanceof Duration;
      };
  
      for (i = lists.length - 1; i >= 0; --i) {
          makeList(lists[i]);
      }
  
      moment.normalizeUnits = function (units) {
          return normalizeUnits(units);
      };
  
      moment.invalid = function (flags) {
          var m = moment.utc(NaN);
          if (flags != null) {
              extend(m._pf, flags);
          }
          else {
              m._pf.userInvalidated = true;
          }
  
          return m;
      };
  
      moment.parseZone = function () {
          return moment.apply(null, arguments).parseZone();
      };
  
      moment.parseTwoDigitYear = function (input) {
          return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
      };
  
      moment.isDate = isDate;
  
      /************************************
          Moment Prototype
      ************************************/
  
  
      extend(moment.fn = Moment.prototype, {
  
          clone : function () {
              return moment(this);
          },
  
          valueOf : function () {
              return +this._d - ((this._offset || 0) * 60000);
          },
  
          unix : function () {
              return Math.floor(+this / 1000);
          },
  
          toString : function () {
              return this.clone().locale('en').format('ddd MMM DD YYYY HH:mm:ss [GMT]ZZ');
          },
  
          toDate : function () {
              return this._offset ? new Date(+this) : this._d;
          },
  
          toISOString : function () {
              var m = moment(this).utc();
              if (0 < m.year() && m.year() <= 9999) {
                  if ('function' === typeof Date.prototype.toISOString) {
                      // native implementation is ~50x faster, use it when we can
                      return this.toDate().toISOString();
                  } else {
                      return formatMoment(m, 'YYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
                  }
              } else {
                  return formatMoment(m, 'YYYYYY-MM-DD[T]HH:mm:ss.SSS[Z]');
              }
          },
  
          toArray : function () {
              var m = this;
              return [
                  m.year(),
                  m.month(),
                  m.date(),
                  m.hours(),
                  m.minutes(),
                  m.seconds(),
                  m.milliseconds()
              ];
          },
  
          isValid : function () {
              return isValid(this);
          },
  
          isDSTShifted : function () {
              if (this._a) {
                  return this.isValid() && compareArrays(this._a, (this._isUTC ? moment.utc(this._a) : moment(this._a)).toArray()) > 0;
              }
  
              return false;
          },
  
          parsingFlags : function () {
              return extend({}, this._pf);
          },
  
          invalidAt: function () {
              return this._pf.overflow;
          },
  
          utc : function (keepLocalTime) {
              return this.utcOffset(0, keepLocalTime);
          },
  
          local : function (keepLocalTime) {
              if (this._isUTC) {
                  this.utcOffset(0, keepLocalTime);
                  this._isUTC = false;
  
                  if (keepLocalTime) {
                      this.subtract(this._dateUtcOffset(), 'm');
                  }
              }
              return this;
          },
  
          format : function (inputString) {
              var output = formatMoment(this, inputString || moment.defaultFormat);
              return this.localeData().postformat(output);
          },
  
          add : createAdder(1, 'add'),
  
          subtract : createAdder(-1, 'subtract'),
  
          diff : function (input, units, asFloat) {
              var that = makeAs(input, this),
                  zoneDiff = (that.utcOffset() - this.utcOffset()) * 6e4,
                  anchor, diff, output, daysAdjust;
  
              units = normalizeUnits(units);
  
              if (units === 'year' || units === 'month' || units === 'quarter') {
                  output = monthDiff(this, that);
                  if (units === 'quarter') {
                      output = output / 3;
                  } else if (units === 'year') {
                      output = output / 12;
                  }
              } else {
                  diff = this - that;
                  output = units === 'second' ? diff / 1e3 : // 1000
                      units === 'minute' ? diff / 6e4 : // 1000 * 60
                      units === 'hour' ? diff / 36e5 : // 1000 * 60 * 60
                      units === 'day' ? (diff - zoneDiff) / 864e5 : // 1000 * 60 * 60 * 24, negate dst
                      units === 'week' ? (diff - zoneDiff) / 6048e5 : // 1000 * 60 * 60 * 24 * 7, negate dst
                      diff;
              }
              return asFloat ? output : absRound(output);
          },
  
          from : function (time, withoutSuffix) {
              return moment.duration({to: this, from: time}).locale(this.locale()).humanize(!withoutSuffix);
          },
  
          fromNow : function (withoutSuffix) {
              return this.from(moment(), withoutSuffix);
          },
  
          calendar : function (time) {
              // We want to compare the start of today, vs this.
              // Getting start-of-today depends on whether we're locat/utc/offset
              // or not.
              var now = time || moment(),
                  sod = makeAs(now, this).startOf('day'),
                  diff = this.diff(sod, 'days', true),
                  format = diff < -6 ? 'sameElse' :
                      diff < -1 ? 'lastWeek' :
                      diff < 0 ? 'lastDay' :
                      diff < 1 ? 'sameDay' :
                      diff < 2 ? 'nextDay' :
                      diff < 7 ? 'nextWeek' : 'sameElse';
              return this.format(this.localeData().calendar(format, this, moment(now)));
          },
  
          isLeapYear : function () {
              return isLeapYear(this.year());
          },
  
          isDST : function () {
              return (this.utcOffset() > this.clone().month(0).utcOffset() ||
                  this.utcOffset() > this.clone().month(5).utcOffset());
          },
  
          day : function (input) {
              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;
              }
          },
  
          month : makeAccessor('Month', true),
  
          startOf : function (units) {
              units = normalizeUnits(units);
              // the following switch intentionally omits break keywords
              // to utilize falling through the cases.
              switch (units) {
              case 'year':
                  this.month(0);
                  /* falls through */
              case 'quarter':
              case 'month':
                  this.date(1);
                  /* falls through */
              case 'week':
              case 'isoWeek':
              case 'day':
                  this.hours(0);
                  /* falls through */
              case 'hour':
                  this.minutes(0);
                  /* falls through */
              case 'minute':
                  this.seconds(0);
                  /* falls through */
              case 'second':
                  this.milliseconds(0);
                  /* falls through */
              }
  
              // weeks are a special case
              if (units === 'week') {
                  this.weekday(0);
              } else if (units === 'isoWeek') {
                  this.isoWeekday(1);
              }
  
              // quarters are also special
              if (units === 'quarter') {
                  this.month(Math.floor(this.month() / 3) * 3);
              }
  
              return this;
          },
  
          endOf: function (units) {
              units = normalizeUnits(units);
              if (units === undefined || units === 'millisecond') {
                  return this;
              }
              return this.startOf(units).add(1, (units === 'isoWeek' ? 'week' : units)).subtract(1, 'ms');
          },
  
          isAfter: function (input, units) {
              var inputMs;
              units = normalizeUnits(typeof units !== 'undefined' ? units : 'millisecond');
              if (units === 'millisecond') {
                  input = moment.isMoment(input) ? input : moment(input);
                  return +this > +input;
              } else {
                  inputMs = moment.isMoment(input) ? +input : +moment(input);
                  return inputMs < +this.clone().startOf(units);
              }
          },
  
          isBefore: function (input, units) {
              var inputMs;
              units = normalizeUnits(typeof units !== 'undefined' ? units : 'millisecond');
              if (units === 'millisecond') {
                  input = moment.isMoment(input) ? input : moment(input);
                  return +this < +input;
              } else {
                  inputMs = moment.isMoment(input) ? +input : +moment(input);
                  return +this.clone().endOf(units) < inputMs;
              }
          },
  
          isBetween: function (from, to, units) {
              return this.isAfter(from, units) && this.isBefore(to, units);
          },
  
          isSame: function (input, units) {
              var inputMs;
              units = normalizeUnits(units || 'millisecond');
              if (units === 'millisecond') {
                  input = moment.isMoment(input) ? input : moment(input);
                  return +this === +input;
              } else {
                  inputMs = +moment(input);
                  return +(this.clone().startOf(units)) <= inputMs && inputMs <= +(this.clone().endOf(units));
              }
          },
  
          min: deprecate(
                   'moment().min is deprecated, use moment.min instead. https://github.com/moment/moment/issues/1548',
                   function (other) {
                       other = moment.apply(null, arguments);
                       return other < this ? this : other;
                   }
           ),
  
          max: deprecate(
                  'moment().max is deprecated, use moment.max instead. https://github.com/moment/moment/issues/1548',
                  function (other) {
                      other = moment.apply(null, arguments);
                      return other > this ? this : other;
                  }
          ),
  
          zone : deprecate(
                  'moment().zone is deprecated, use moment().utcOffset instead. ' +
                  'https://github.com/moment/moment/issues/1779',
                  function (input, keepLocalTime) {
                      if (input != null) {
                          if (typeof input !== 'string') {
                              input = -input;
                          }
  
                          this.utcOffset(input, keepLocalTime);
  
                          return this;
                      } else {
                          return -this.utcOffset();
                      }
                  }
          ),
  
          // 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.
          utcOffset : function (input, keepLocalTime) {
              var offset = this._offset || 0,
                  localAdjust;
              if (input != null) {
                  if (typeof input === 'string') {
                      input = utcOffsetFromString(input);
                  }
                  if (Math.abs(input) < 16) {
                      input = input * 60;
                  }
                  if (!this._isUTC && keepLocalTime) {
                      localAdjust = this._dateUtcOffset();
                  }
                  this._offset = input;
                  this._isUTC = true;
                  if (localAdjust != null) {
                      this.add(localAdjust, 'm');
                  }
                  if (offset !== input) {
                      if (!keepLocalTime || this._changeInProgress) {
                          addOrSubtractDurationFromMoment(this,
                                  moment.duration(input - offset, 'm'), 1, false);
                      } else if (!this._changeInProgress) {
                          this._changeInProgress = true;
                          moment.updateOffset(this, true);
                          this._changeInProgress = null;
                      }
                  }
  
                  return this;
              } else {
                  return this._isUTC ? offset : this._dateUtcOffset();
              }
          },
  
          isLocal : function () {
              return !this._isUTC;
          },
  
          isUtcOffset : function () {
              return this._isUTC;
          },
  
          isUtc : function () {
              return this._isUTC && this._offset === 0;
          },
  
          zoneAbbr : function () {
              return this._isUTC ? 'UTC' : '';
          },
  
          zoneName : function () {
              return this._isUTC ? 'Coordinated Universal Time' : '';
          },
  
          parseZone : function () {
              if (this._tzm) {
                  this.utcOffset(this._tzm);
              } else if (typeof this._i === 'string') {
                  this.utcOffset(utcOffsetFromString(this._i));
              }
              return this;
          },
  
          hasAlignedHourOffset : function (input) {
              if (!input) {
                  input = 0;
              }
              else {
                  input = moment(input).utcOffset();
              }
  
              return (this.utcOffset() - input) % 60 === 0;
          },
  
          daysInMonth : function () {
              return daysInMonth(this.year(), this.month());
          },
  
          dayOfYear : function (input) {
              var dayOfYear = round((moment(this).startOf('day') - moment(this).startOf('year')) / 864e5) + 1;
              return input == null ? dayOfYear : this.add((input - dayOfYear), 'd');
          },
  
          quarter : function (input) {
              return input == null ? Math.ceil((this.month() + 1) / 3) : this.month((input - 1) * 3 + this.month() % 3);
          },
  
          weekYear : function (input) {
              var year = weekOfYear(this, this.localeData()._week.dow, this.localeData()._week.doy).year;
              return input == null ? year : this.add((input - year), 'y');
          },
  
          isoWeekYear : function (input) {
              var year = weekOfYear(this, 1, 4).year;
              return input == null ? year : this.add((input - year), 'y');
          },
  
          week : function (input) {
              var week = this.localeData().week(this);
              return input == null ? week : this.add((input - week) * 7, 'd');
          },
  
          isoWeek : function (input) {
              var week = weekOfYear(this, 1, 4).week;
              return input == null ? week : this.add((input - week) * 7, 'd');
          },
  
          weekday : function (input) {
              var weekday = (this.day() + 7 - this.localeData()._week.dow) % 7;
              return input == null ? weekday : this.add(input - weekday, 'd');
          },
  
          isoWeekday : function (input) {
              // 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.
              return input == null ? this.day() || 7 : this.day(this.day() % 7 ? input : input - 7);
          },
  
          isoWeeksInYear : function () {
              return weeksInYear(this.year(), 1, 4);
          },
  
          weeksInYear : function () {
              var weekInfo = this.localeData()._week;
              return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);
          },
  
          get : function (units) {
              units = normalizeUnits(units);
              return this[units]();
          },
  
          set : function (units, value) {
              var unit;
              if (typeof units === 'object') {
                  for (unit in units) {
                      this.set(unit, units[unit]);
                  }
              }
              else {
                  units = normalizeUnits(units);
                  if (typeof this[units] === 'function') {
                      this[units](value);
                  }
              }
              return this;
          },
  
          // If passed a locale key, it will set the locale for this
          // instance.  Otherwise, it will return the locale configuration
          // variables for this instance.
          locale : function (key) {
              var newLocaleData;
  
              if (key === undefined) {
                  return this._locale._abbr;
              } else {
                  newLocaleData = moment.localeData(key);
                  if (newLocaleData != null) {
                      this._locale = newLocaleData;
                  }
                  return this;
              }
          },
  
          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);
                  }
              }
          ),
  
          localeData : function () {
              return this._locale;
          },
  
          _dateUtcOffset : function () {
              // On Firefox.24 Date#getTimezoneOffset returns a floating point.
              // https://github.com/moment/moment/pull/1871
              return -Math.round(this._d.getTimezoneOffset() / 15) * 15;
          }
  
      });
  
      function rawMonthSetter(mom, value) {
          var dayOfMonth;
  
          // TODO: Move this out of here!
          if (typeof value === 'string') {
              value = mom.localeData().monthsParse(value);
              // TODO: Another silent failure?
              if (typeof value !== 'number') {
                  return mom;
              }
          }
  
          dayOfMonth = Math.min(mom.date(),
                  daysInMonth(mom.year(), value));
          mom._d['set' + (mom._isUTC ? 'UTC' : '') + 'Month'](value, dayOfMonth);
          return mom;
      }
  
      function rawGetter(mom, unit) {
          return mom._d['get' + (mom._isUTC ? 'UTC' : '') + unit]();
      }
  
      function rawSetter(mom, unit, value) {
          if (unit === 'Month') {
              return rawMonthSetter(mom, value);
          } else {
              return mom._d['set' + (mom._isUTC ? 'UTC' : '') + unit](value);
          }
      }
  
      function makeAccessor(unit, keepTime) {
          return function (value) {
              if (value != null) {
                  rawSetter(this, unit, value);
                  moment.updateOffset(this, keepTime);
                  return this;
              } else {
                  return rawGetter(this, unit);
              }
          };
      }
  
      moment.fn.millisecond = moment.fn.milliseconds = makeAccessor('Milliseconds', false);
      moment.fn.second = moment.fn.seconds = makeAccessor('Seconds', false);
      moment.fn.minute = moment.fn.minutes = makeAccessor('Minutes', false);
      // Setting the hour should keep the time, because the user explicitly
      // specified which hour he wants. So trying to maintain the same hour (in
      // a new timezone) makes sense. Adding/subtracting hours does not follow
      // this rule.
      moment.fn.hour = moment.fn.hours = makeAccessor('Hours', true);
      // moment.fn.month is defined separately
      moment.fn.date = makeAccessor('Date', true);
      moment.fn.dates = deprecate('dates accessor is deprecated. Use date instead.', makeAccessor('Date', true));
      moment.fn.year = makeAccessor('FullYear', true);
      moment.fn.years = deprecate('years accessor is deprecated. Use year instead.', makeAccessor('FullYear', true));
  
      // add plural methods
      moment.fn.days = moment.fn.day;
      moment.fn.months = moment.fn.month;
      moment.fn.weeks = moment.fn.week;
      moment.fn.isoWeeks = moment.fn.isoWeek;
      moment.fn.quarters = moment.fn.quarter;
  
      // add aliased format methods
      moment.fn.toJSON = moment.fn.toISOString;
  
      // alias isUtc for dev-friendliness
      moment.fn.isUTC = moment.fn.isUtc;
  
      /************************************
          Duration Prototype
      ************************************/
  
  
      function daysToYears (days) {
          // 400 years have 146097 days (taking into account leap year rules)
          return days * 400 / 146097;
      }
  
      function yearsToDays (years) {
          // years * 365 + absRound(years / 4) -
          //     absRound(years / 100) + absRound(years / 400);
          return years * 146097 / 400;
      }
  
      extend(moment.duration.fn = Duration.prototype, {
  
          _bubble : function () {
              var milliseconds = this._milliseconds,
                  days = this._days,
                  months = this._months,
                  data = this._data,
                  seconds, minutes, hours, years = 0;
  
              // The following code bubbles up values, see the tests for
              // examples of what that means.
              data.milliseconds = milliseconds % 1000;
  
              seconds = absRound(milliseconds / 1000);
              data.seconds = seconds % 60;
  
              minutes = absRound(seconds / 60);
              data.minutes = minutes % 60;
  
              hours = absRound(minutes / 60);
              data.hours = hours % 24;
  
              days += absRound(hours / 24);
  
              // Accurately convert days to years, assume start from year 0.
              years = absRound(daysToYears(days));
              days -= absRound(yearsToDays(years));
  
              // 30 days to a month
              // TODO (iskren): Use anchor date (like 1st Jan) to compute this.
              months += absRound(days / 30);
              days %= 30;
  
              // 12 months -> 1 year
              years += absRound(months / 12);
              months %= 12;
  
              data.days = days;
              data.months = months;
              data.years = years;
          },
  
          abs : function () {
              this._milliseconds = Math.abs(this._milliseconds);
              this._days = Math.abs(this._days);
              this._months = Math.abs(this._months);
  
              this._data.milliseconds = Math.abs(this._data.milliseconds);
              this._data.seconds = Math.abs(this._data.seconds);
              this._data.minutes = Math.abs(this._data.minutes);
              this._data.hours = Math.abs(this._data.hours);
              this._data.months = Math.abs(this._data.months);
              this._data.years = Math.abs(this._data.years);
  
              return this;
          },
  
          weeks : function () {
              return absRound(this.days() / 7);
          },
  
          valueOf : function () {
              return this._milliseconds +
                this._days * 864e5 +
                (this._months % 12) * 2592e6 +
                toInt(this._months / 12) * 31536e6;
          },
  
          humanize : function (withSuffix) {
              var output = relativeTime(this, !withSuffix, this.localeData());
  
              if (withSuffix) {
                  output = this.localeData().pastFuture(+this, output);
              }
  
              return this.localeData().postformat(output);
          },
  
          add : function (input, val) {
              // supports only 2.0-style add(1, 'user') or add(moment)
              var dur = moment.duration(input, val);
  
              this._milliseconds += dur._milliseconds;
              this._days += dur._days;
              this._months += dur._months;
  
              this._bubble();
  
              return this;
          },
  
          subtract : function (input, val) {
              var dur = moment.duration(input, val);
  
              this._milliseconds -= dur._milliseconds;
              this._days -= dur._days;
              this._months -= dur._months;
  
              this._bubble();
  
              return this;
          },
  
          get : function (units) {
              units = normalizeUnits(units);
              return this[units.toLowerCase() + 's']();
          },
  
          as : function (units) {
              var days, months;
              units = normalizeUnits(units);
  
              if (units === 'month' || units === 'year') {
                  days = this._days + this._milliseconds / 864e5;
                  months = this._months + daysToYears(days) * 12;
                  return units === 'month' ? months : months / 12;
              } else {
                  // handle milliseconds separately because of floating point math errors (issue #1867)
                  days = this._days + Math.round(yearsToDays(this._months / 12));
                  switch (units) {
                      case 'week': return days / 7 + this._milliseconds / 6048e5;
                      case 'day': return days + this._milliseconds / 864e5;
                      case 'hour': return days * 24 + this._milliseconds / 36e5;
                      case 'minute': return days * 24 * 60 + this._milliseconds / 6e4;
                      case 'second': return days * 24 * 60 * 60 + this._milliseconds / 1000;
                      // Math.floor prevents floating point math errors here
                      case 'millisecond': return Math.floor(days * 24 * 60 * 60 * 1000) + this._milliseconds;
                      default: throw new Error('Unknown unit ' + units);
                  }
              }
          },
  
          lang : moment.fn.lang,
          locale : moment.fn.locale,
  
          toIsoString : deprecate(
              'toIsoString() is deprecated. Please use toISOString() instead ' +
              '(notice the capitals)',
              function () {
                  return this.toISOString();
              }
          ),
  
          toISOString : function () {
              // inspired by https://github.com/dordille/moment-isoduration/blob/master/moment.isoduration.js
              var years = Math.abs(this.years()),
                  months = Math.abs(this.months()),
                  days = Math.abs(this.days()),
                  hours = Math.abs(this.hours()),
                  minutes = Math.abs(this.minutes()),
                  seconds = Math.abs(this.seconds() + this.milliseconds() / 1000);
  
              if (!this.asSeconds()) {
                  // this is the same as C#'user (Noda) and python (isodate)...
                  // but not other JS (goog.date)
                  return 'P0D';
              }
  
              return (this.asSeconds() < 0 ? '-' : '') +
                  'P' +
                  (years ? years + 'Y' : '') +
                  (months ? months + 'M' : '') +
                  (days ? days + 'D' : '') +
                  ((hours || minutes || seconds) ? 'T' : '') +
                  (hours ? hours + 'H' : '') +
                  (minutes ? minutes + 'M' : '') +
                  (seconds ? seconds + 'S' : '');
          },
  
          localeData : function () {
              return this._locale;
          },
  
          toJSON : function () {
              return this.toISOString();
          }
      });
  
      moment.duration.fn.toString = moment.duration.fn.toISOString;
  
      function makeDurationGetter(name) {
          moment.duration.fn[name] = function () {
              return this._data[name];
          };
      }
  
      for (i in unitMillisecondFactors) {
          if (hasOwnProp(unitMillisecondFactors, i)) {
              makeDurationGetter(i.toLowerCase());
          }
      }
  
      moment.duration.fn.asMilliseconds = function () {
          return this.as('ms');
      };
      moment.duration.fn.asSeconds = function () {
          return this.as('s');
      };
      moment.duration.fn.asMinutes = function () {
          return this.as('m');
      };
      moment.duration.fn.asHours = function () {
          return this.as('h');
      };
      moment.duration.fn.asDays = function () {
          return this.as('d');
      };
      moment.duration.fn.asWeeks = function () {
          return this.as('weeks');
      };
      moment.duration.fn.asMonths = function () {
          return this.as('M');
      };
      moment.duration.fn.asYears = function () {
          return this.as('y');
      };
  
      /************************************
          Default Locale
      ************************************/
  
  
      // Set default locale, other locale will inherit from English.
      moment.locale('en', {
          ordinalParse: /\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;
          }
      });
  
      /* EMBED_LOCALES */
  
      /************************************
          Exposing Moment
      ************************************/
  
      function makeGlobal(shouldDeprecate) {
          /*global ender:false */
          if (typeof ender !== 'undefined') {
              return;
          }
          oldGlobalMoment = globalScope.moment;
          if (shouldDeprecate) {
              globalScope.moment = deprecate(
                      'Accessing Moment through the global scope is ' +
                      'deprecated, and will be removed in an upcoming ' +
                      'release.',
                      moment);
          } else {
              globalScope.moment = moment;
          }
      }
  
      // CommonJS module is defined
      if (hasModule) {
          module.exports = moment;
      } else if (typeof define === 'function' && define.amd) {
          define(function (require, exports, module) {
              if (module.config && module.config() && module.config().noGlobal === true) {
                  // release the global variable
                  globalScope.moment = oldGlobalMoment;
              }
  
              return moment;
          });
          makeGlobal(true);
      } else {
          makeGlobal();
      }
  }).call(this);
  