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//usr/local/share/man/man3/Time::Zone.3pm

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.\" ========================================================================
.\"
.IX Title "Time::Zone 3"
.TH Time::Zone 3 "2026-03-21" "perl v5.32.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Time::Zone \- miscellaneous timezone manipulations routines
.SH "VERSION"
.IX Header "VERSION"
version 2.35
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 9
\&    use Time::Zone;
\&    print tz2zone();
\&    print tz2zone($ENV{\*(AqTZ\*(Aq});
\&    print tz2zone($ENV{\*(AqTZ\*(Aq}, time());
\&    my $isdst = 0;
\&    print tz2zone($ENV{\*(AqTZ\*(Aq}, undef, $isdst);
\&    my $offset = tz_local_offset();
\&    my $TZ = "EST";
\&    $offset = tz_offset($TZ);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This is a collection of miscellaneous timezone manipulation routines.
.PP
\&\f(CW\*(C`tz2zone()\*(C'\fR parses the \s-1TZ\s0 environment variable and returns a timezone
string suitable for inclusion in \fBdate\fR\|(1)\-like output.  It optionally takes
a timezone string, a time, and a is-dst flag.
.PP
\&\f(CW\*(C`tz_local_offset()\*(C'\fR determines the offset from \s-1GMT\s0 time in seconds.  It
only does the calculation once.
.PP
\&\f(CW\*(C`tz_offset()\*(C'\fR determines the offset from \s-1GMT\s0 in seconds of a specified
timezone.
.PP
\&\f(CW\*(C`tz_name()\*(C'\fR determines the name of the timezone based on its offset
.SH "NAME"
Time::Zone \-\- miscellaneous timezone manipulations routines
.SH "AUTHORS"
.IX Header "AUTHORS"
Graham Barr <gbarr@pobox.com>
David Muir Sharnoff <muir@idiom.com>
Paul Foley <paul@ascent.com>
.SH "AUTHOR"
.IX Header "AUTHOR"
Graham <gbarr@pobox.com>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is copyright (c) 2020 by Graham Barr.
.PP
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.