gmtime (time_t)
The time, usually expressed as the number of seconds from midnight January 1, 1970 on UNIX systems, though it may differ across implementations.
A instance of the class tm, whose members are as follows:
The number of seconds after the minute (0 - 59).
The number of minutes after the hour (0 - 59).
The number of hours past midnight (0 - 23).
The day of the month (1 - 31).
The number of months since January (0 - 11)
The number of years since 1900.
The number of days since Sunday (0 - 6).
The number of days since January 1 (0 - 365)
1 if daylight saving time is in effect, 0 if not, and a negative number ifthe information is not available.
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