Section 24.33. Date.getTimezoneOffset( ): determine the offset from GMT

24.33. Date.getTimezoneOffset( ): determine the offset from GMT

ECMAScript v1

24.33.1. Synopsis

date.getTimezoneOffset( )

24.33.1.1. Returns

The difference, in minutes, between GMT and local time.

24.33.2. Description

getTimezoneOffset( ) returns the number of minutes difference between the GMT or UTC time and the local time. In effect, this function tells you what time zone the JavaScript code is running in and whether or not daylight saving time is (or would be) in effect at the specified date.

The return value is measured in minutes, rather than hours, because some countries have time zones that are not at even one-hour intervals.