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CentOS 7.0 - man page for datetime::timezone::olsondb (centos section 3)

DateTime::TimeZone::OlsonDB(3) User Contributed Perl Documentation DateTime::TimeZone::OlsonDB(3)

       DateTime::TimeZone::OlsonDB - An object to represent an Olson time zone database

       version 1.63

	 none yet

       This module parses the Olson database time zone definition files and creates various
       objects representing time zone data.

       Each time zone is broken down into several parts.  The first piece is an observance, which
       is an offset from UTC and an abbreviation.  A single zone may contain many observances,
       reflecting historical changes in that time zone over time.  An observance may also refer
       to a set of rules.

       Rules are named, and may apply to many different zones.	For example, the "US" rules apply
       to most of the time zones in the US, unsurprisingly.  Rules are made of an offset from
       standard time and a definition of when that offset changes.  Changes can be a one time
       thing, or they can recur at regular times through a span of years.

       Each rule may have an associated letter, which is used to generate an abbreviated name for
       the time zone, along with the offset's abbreviation.  For example, if the offset's
       abbreviation is "C%sT", and the a rule specifies the letter "S", then the abbreviation
       when that rule is in effect is "CST".

       Not yet documented.  This stuff is a mess.

       Dave Rolsky <autarch@urth.org>

       This software is copyright (c) 2013 by Dave Rolsky.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.

perl v5.16.3				    2013-10-28		   DateTime::TimeZone::OlsonDB(3)

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