1Date::Manip::TZdata(3)User Contributed Perl DocumentationDate::Manip::TZdata(3)
2
3
4

NAME

6       Date::Manip::TZdata -- Internal module for working with the tzdata
7       files
8

SYNOPSIS

10          use Date::Manip::TZdata;
11
12          $tzd  = new Date::Manip::TZdata($dir);
13

DESCRIPTION

15       This module is not intended for public use. It is used internally by
16       the scripts used to analyze the time zone database and generate the
17       modules for each time zone. The module is included in the distribution
18       solely for the sake of completeness. Currently, no support is offered
19       for this module, and it can (and may) change without notice.
20
21       This module consists of routines for working with the tzdata files.
22       These files are updated several times a year and are the basis for time
23       zone descriptions for most computer systems.
24

ROUTINES

26       new
27              use Date::Manip::TZdata;
28
29              $tzd  = new Date::Manip::TZdata($dir);
30
31           This finds and reads in all the tzdata. If $dir is passed in, it is
32           the directory where a tzdata directory is located. It defaults to
33           the current directory.
34

KNOWN LIMITATIONS

36       Some assumptions and limitations are assumed in the logic of this
37       module.
38
39       When a time change occurs, the time may change backwards or forwards.
40       Time changes rules are listed on a per-year basis.  It is assumed that
41       time changes will not occur so close to the end or start of the year as
42       to cross the year boundary (in other words, the year will not change as
43       a result of the time change).  This is not accounted for, and it is
44       hoped that this situation will never occur.
45
46       Also, because this module is strictly limited to 4 digit positive years
47       (regardless of whether it is wall clock or universal time), and because
48       various parts of the module switch back and forth, valid times for this
49       module are from Jan 2, 0001 to Dec 30, 9999. This ensures that
50       conversions from wall clock to universal or vice versa will never make
51       dates occur in the year 0000 or 10000.
52

KNOWN BUGS

54       None known.
55

BUGS AND QUESTIONS

57       Please refer to the Date::Manip man page for information on submitting
58       bug reports or questions to the author.
59

AUTHOR

61       Sullivan Beck (sbeck@cpan.org)
62
63
64
65perl v5.30.1                      2019-12-09            Date::Manip::TZdata(3)
Impressum