OpenBSD manual page server

Manual Page Search Parameters
TIMEZONE(3) Library Functions Manual TIMEZONE(3)

timezone — return the time zone abbreviation

#include <time.h>

char *
timezone(int zone, int dst);

This interface is for compatibility only; it is impossible to reliably map ()'s arguments to a time zone abbreviation (see ctime(3)).

The () function returns a pointer to a time zone abbreviation for the specified zone and dst values. zone is the number of minutes west of GMT and dst is non-zero if Daylight Saving Time is in effect.

This function is not used to set the system's time zone. The default system time zone may be set by running “zic -l timezone” as the superuser.

ctime(3), zic(8)

A timezone() function appeared in Version 7 AT&T UNIX.

June 5, 2013 OpenBSD-5.6