DateTime.getUtcOffset

Determines the offset to UTC in effect at the time and in the time zone of @datetime.

The offset is the number of microseconds that you add to UTC time to arrive at local time for the time zone (ie: negative numbers for time zones west of GMT, positive numbers for east).

If @datetime represents UTC time, then the offset is always zero.

Return: the number of microseconds that should be added to UTC to get the local time

class DateTime
getUtcOffset
()

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Since

2.26