code: function parse (dateString, locale, timezone) {
    _checkParams(locale, timezone)
    // list all available localized formats, from most specific to least
    return moment.tz(dateString, [moment.ISO_8601, 'llll', 'LLLL', 'lll', 'LLL', 'll', 'LL', 'l', 'L'], locale, timezone)
  }
docs: Parses a string into a localized ISO 8601 string with timezone
  @param {String} dateString
  @param {String} locale
  @param {String} timezone
  @returns {String} ISO 8601 string