Материал из C\C++ эксперт
gmtime: returns time in Coordinated Universal Time (UTC)(essentially Greenwich mean time)
//Declaration: struct tm *gmtime(const time_t *time);
#include <time.h>
#include <stdio.h>
/* Print local and UTC time. */
int main(void)
{
struct tm *local, *gm;
time_t t;
t = time(NULL);
local = localtime(&t);
printf("Local time and date: %s\n", asctime(local));
gm = gmtime(&t);
printf("Coordinated Universal Time and date: %s", asctime(gm));
return 0;
}
/*
Local time and date: Sat Mar 3 16:12:46 2007
Coordinated Universal Time and date: Sat Mar 3 16:12:46 2007
*/
