1DateTime::TimeZone::LocUasle:r:WCionn3t2r(i3b)uted PerlDDaotceuTmiemnet:a:tTiiomneZone::Local::Win32(3)
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NAME

6       DateTime::TimeZone::Local::Win32 - Determine the local system's time
7       zone on Windows
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SYNOPSIS

10         my $tz = DateTime::TimeZone->new( name => 'local' );
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12         my $tz = DateTime::TimeZone::Local->TimeZone();
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DESCRIPTION

15       This module provides methods for determining the local time zone on a
16       Windows platform.
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HOW THE TIME ZONE IS DETERMINED

19       This class tries the following methods of determining the local time
20       zone:
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22       ·   $ENV{TZ}
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24           It checks $ENV{TZ} for a valid time zone name.
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26       ·   Windows Registry
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28           When using the registry, we look for the Windows time zone and use
29           a mapping to translate this to an Olson time zone name.
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31           ·       Windows Vista and 2008
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33                   We look in
34                   "SYSTEM/CurrentControlSet/Control/TimeZoneInformation/" for
35                   a node named "/TimeZoneKeyName". If this exists, we use
36                   this key to look up the Olson time zone name in our
37                   mapping.
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39           ·       Windows NT, Windows 2000, Windows XP, Windows 2003 Server
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41                   We look in "SOFTWARE/Microsoft/Windows
42                   NT/CurrentVersion/Time Zones/" and loop through all of its
43                   sub keys.
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45                   For each sub key, we compare the value of the key with
46                   "/Std" appended to the end to the value of
47                   "SYSTEM/CurrentControlSet/Control/TimeZoneInformation/StandardName".
48                   This gives us the English name of the Windows time zone,
49                   which we use to look up the Olson time zone name.
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51           ·       Windows 95, Windows 98, Windows Millenium Edition
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53                   The algorithm is the same as for NT, but we loop through
54                   the sub keys of
55                   "SOFTWARE/Microsoft/Windows/CurrentVersion/Time Zones/"
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AUTHOR

58       Dave Rolsky, <autarch@urth.org>
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61       Copyright (c) 2003-2008 David Rolsky.  All rights reserved.  This
62       program is free software; you can redistribute it and/or modify it
63       under the same terms as Perl itself.
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65       The full text of the license can be found in the LICENSE file included
66       with this module.
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70perl v5.10.1                      2017-03-21DateTime::TimeZone::Local::Win32(3)
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