This method parses the string provided and keeps the resulting moment in a fixed timezone.
moment.parseZone() moment.parseZone(String)
var a = moment().parseZone();
moment.parseZone is similar to using moment.utcOffset with a string.
var a = moment("2013-01-01T00:00:00-13:00").utcOffset("2013-01-01T00:00:00-13:00"); var b = moment.parseZone("2013-01-01T00:00:00-13:00");