Are struct stat times GMT?

Question

One of the fields in the struct stat is st_mtime. I guess these are seconds since January 1, 1970. Is it GMT or local time?

Answer 1

The time_t type represents the number of seconds elapsed since January 1, 1970, 00:00 UTC (this moment in time is called the “epoch” and occurred at that moment all over the world). You can assume that “UTC” means the same as “GMT” (see Leap Second for details on very small differences).

Remember that instead of adding or subtracting values ​​from the time_t type, you should always use the localtime() and mktime() functions to convert to and from the local time zone representation.