Defined in header
Converts given time since epoch as std::time_t value into calendar time, expressed in Coordinated Universal Time (UTC).
|time||-||pointer to a time_t object to convert|
 Return value
Pointer to a static internal std::tm object on success, or NULL otherwise. The structure may be shared between std::gmtime, std::localtime, and std::ctime and may be overwritten on each invocation.
This function may not be thread-safe.
POSIX requires that this function sets errno to EOVERFLOW if it fails because the argument is too large.
UTC: Wed Dec 28 11:44:28 2011 GMT local: Wed Dec 28 06:44:28 2011 EST
 See also
| converts time since epoch to calendar time expressed as local time
C documentation for gmtime