GMT Offset

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GMT Offset

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This JavaScript use of the getTimeZoneOffset returns the difference in minutes from the local time to GMT. There are three examples of how to correctly use this. The last example is needed since the number of minutes is negative if the zone you are testing is ahead of UTC and is positive if the zone is behind UTC. It appears to be the opposite of what you would expect. The number of minutes is CORRECTED for DST if applicable. Click the test button.