Getting the client's timezone offset in JavaScript

javascript timezone
Árvíztűrő tükörfúrógép picture Árvíztűrő tükörfúrógép · Jul 7, 2009 · Viewed 613.4k times · Source

How can I gather the visitor's time zone information? I need the Timezone, as well as the GMT offset hours.

Answer

NickFitz picture NickFitz · Jul 7, 2009 

var offset = new Date().getTimezoneOffset();
console.log(offset);

The time-zone offset is the difference, in minutes, between UTC and local time. Note that this means that the offset is positive if the local timezone is behind UTC and negative if it is ahead. For example, if your time zone is UTC+10 (Australian Eastern Standard Time), -600 will be returned. Daylight savings time prevents this value from being a constant even for a given locale

Note that not all timezones are offset by whole hours: for example, Newfoundland is UTC minus 3h 30m (leaving Daylight Saving Time out of the equation).

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