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Gmtime

Item Value Header filetime.h Declarationstruct tm *gmtime(const time_t *time); Returnreturns time in Coordinated Universal Time (UTC)(essentially Greenwich mean 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