DateTime::TimeZone::OlsonDB(3pm) - phpMan

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

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

VERSION
version 1.70

SYNOPSIS
none yet

DESCRIPTION
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".

USAGE
Not yet documented. This stuff is a mess.

AUTHOR
Dave Rolsky <autarch AT urth.org>

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 2019-08-09 DateTime::TimeZone::OlsonDB(3)

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