Convert a time_t value to Coordinated Universal Time (UTC), which is the new name for Greenwich Mean Time.

This function is compatible with the following targets:

ANSI

BeOS

EMB/RTOS

Mac OS

Palm OS

Win32

#include <time.h>

struct tm *gmtime(const time_t *timer);

Parameters for this facility are:

timer

const time_t *

The address of the time_t variable

The gmtime function converts the calendar time pointed to by timer into a broken-down time, expressed as UTC.

The gmtime() function returns a pointer to that object.

#include <time.h>
#include <stdio.h>

int main(void)
{
	time_t systime;
	struct tm *utc;

	systime = time(NULL);
	utc = gmtime(&systime);

	printf("Universal Coordinated Time:\n");
	puts(asctime(utc));	

	return 0;
}
Output:
Universal Coordinated Time:
Thu Feb 24 18:06:10 1994





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Last updated: August 16, 2000