gmtime - convert a time value to a broken-down UTC time
#include "zkTime.h"
struct tm *gmtime(const time_t *timer);
The gmtime() function converts the calendar time pointed to by timer into a broken-down time, expressed as Coordinated Universal Time (UTC).
The gmtime() interface need not be reentrant.
The gmtime() function returns a pointer to a struct tm.
No errors are defined.
The asctime(), ctime(), gmtime() and localtime() functions return values in one of two static objects: a broken-down time structure and an array of char. Execution of any of the functions may overwrite the information returned in either of these objects by any of the other functions.