Determines the offset to UTC in effect during a particular interval
of time in the time zone tz.
The offset is the number of seconds that you add to UTC time to
arrive at local time for tz (ie: negative numbers for time zones
west of GMT, positive numbers for east).
Since 2.26
Determines the offset to UTC in effect during a particular interval of time in the time zone tz. The offset is the number of seconds that you add to UTC time to arrive at local time for tz (ie: negative numbers for time zones west of GMT, positive numbers for east). Since 2.26