Time::Zone 1.16

Time::Zone is a miscellaneous timezone manipulations routines.

SYNOPSIS

use Time::Zone;
print tz2zone();
print tz2zone($ENV{TZ});
print tz2zone($ENV{TZ}, time());
print tz2zone($ENV{TZ}, undef, $isdst);
$offset = tz_local_offset();
$offset = tz_offset($TZ);

This is a collection of miscellaneous timezone manipulation routines.
tz2zone() parses the TZ environment variable and returns a timezone string suitable for inclusion in date-like output. It opionally takes a timezone string, a time, and a is-dst flag.

tz_local_offset() determins the offset from GMT time in seconds. It only does the calculation once.

tz_offset() determines the offset from GMT in seconds of a specified timezone.
tz_name() determines the name of the timezone based on its offset