1Date::Manip(3)        User Contributed Perl Documentation       Date::Manip(3)
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NAME

6       Date::Manip - Date manipulation routines
7

DESCRIPTION

9       Date::Manip is a series of modules designed to make any common
10       date/time operation easy to do.  Operations such as comparing two
11       times, determining a date a given amount of time from another, or
12       parsing international times are all easily done.  It deals with time as
13       it is used in the Gregorian calendar (the one currently in use) with
14       full support for time changes due to daylight saving time.
15
16       From the very beginning, the main focus of Date::Manip has been to be
17       able to do ANY desired date/time operation easily.  Many other modules
18       exist which may do a subset of these operations quicker or more
19       efficiently, but no other module can do all of the operations available
20       in Date::Manip.
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22       Date::Manip has functionality to work with several fundamental types of
23       data.
24
25       dates
26           The word date is used extensively here and is somewhat misleading.
27           In Date::Manip, a date consists of three pieces of information: a
28           calendar date (year, month, day), a time of day (hour, minute,
29           second), and time zone information. Calendar dates and times are
30           fully handled. Time zones are handled as well, but depending on how
31           you use Date::Manip, there may be some limitations as discussed
32           below.
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34       delta
35           A delta is an amount of time (i.e. the amount of time between two
36           different dates).  Think of it as the duration of an event or the
37           amount of time between two dates.
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39           A delta refers only to an amount of time. It includes no
40           information about a starting or ending date/time.  Most people will
41           think of a delta as an amount of time, but the term 'time' is
42           already used so much in this module that I didn't want to use it
43           here in order to avoid confusion.
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45       recurrence
46           A recurring event is something which occurs on a regular recurring
47           basis.
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49       holidays and events
50           Holidays and events are basically named dates or recurrences.
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52       Among other things, Date::Manip allow you to:
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54       *   Enter a date in practically any format you choose.
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56       *   Compare two dates, entered in widely different formats to determine
57           which is earlier.
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59       *   Extract any information you want from a date using a format string
60           similar to the Unix date command.
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62       *   Determine the amount of time between two dates, or add an amount of
63           time (a delta) to a date to get a second date.
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65       *   Work with dates using international formats (foreign month names,
66           12/10/95 referring to October rather than December, etc.).
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68       *   Convert dates from one timezone to another.
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70       *   To find a list of dates where a recurring event happens.
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72       Each of these tasks is trivial (one or two lines at most) with this
73       package.
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HOW TO USE DATE::MANIP

76       There are three different ways to use Date::Manip .  There are three
77       interfaces (version 5 functional interface, version 6 functional, and
78       version 6 object-oriented).  A complete description of each is included
79       in the Date::Manip::Interfaces document.  The recommended (and the only
80       one with access to the full functionality of the module) is using the
81       Object-Oriented interface.
82

SEE ALSO

84       Because Date::Manip performs so many operations, the documentation is
85       extensive.  It includes the following documents:
86
87   Information about the different interfaces
88       Read this for a detailed description of each of the interfaces,
89       including information on how to choose and use the interface best
90       suited to your situation.
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92       Date::Manip::Interfaces
93           A complete description of the functional interfaces available.
94           NOTE: it is recommended that you use the OO interface wherever
95           possible as the functional interfaces have some imitations.
96
97   A description of the functional interfaces:
98       Date::Manip::DM5
99           The version 5 functional interface
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101       Date::Manip::DM6
102           The version 6 functional interface
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104   Objects and configuration
105       An introduction to the Date::Manip classes used by the object-oriented
106       interface and how to configure them:
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108       Date::Manip::Objects
109           An overview of the various Date::Manip modules, and how to use
110           them.
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112       Date::Manip::Config
113           Information for configuring Date::Manip
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115   Date::Manip object-oriented modules
116       These are the modules for using the object-oriented interface.
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118       Date::Manip::Obj
119           This is the base class.  All other classes listed here inherit the
120           methods defined in this class.
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122       Date::Manip::Base
123           A module for doing low-level date operations.
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125       Date::Manip::TZ
126           A module for working with time zones.
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128       Date::Manip::Date
129           The module for working with dates.
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131       Date::Manip::Delta
132           The module for working with deltas (amount of time).
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134       Date::Manip::Recur
135           The module for working with recurrences (recurring dates).
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137   Timezone information
138       Date::Manip::DM5abbrevs
139           Time zone abbreviations used in the version 5 interface.
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141       Date::Manip::Zones
142           Time zone data included in Date::Manip used in the version 6
143           interfaces.
144
145   Miscellaneous information:
146       Date::Manip::Calc
147           Detailed information on how date calculations are done.
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149       Date::Manip::Holidays
150           Information on defining and using holidays and events.
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152       Date::Manip::ConfigFile
153           A sample config file.
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155       Date::Manip::Lang
156           Information about the languages supported by Date::Manip and how to
157           add a new language.
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159       Date::Manip::Lang::english
160       Date::Manip::Lang::catalan
161       Date::Manip::Lang::danish
162       Date::Manip::Lang::dutch
163       Date::Manip::Lang::finnish
164       Date::Manip::Lang::french
165       Date::Manip::Lang::german
166       Date::Manip::Lang::italian
167       Date::Manip::Lang::norwegian
168       Date::Manip::Lang::polish
169       Date::Manip::Lang::portugue
170       Date::Manip::Lang::romanian
171       Date::Manip::Lang::russian
172       Date::Manip::Lang::spanish
173       Date::Manip::Lang::swedish
174       Date::Manip::Lang::turkish
175           A description of the parseable words in each language currently
176           supported by Date::Manip.
177
178   Information about the module and administrative things:
179       Date::Manip::Migration5to6
180           Information on changes necessary to scripts when upgrading from
181           5.xx to 6.xx.
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183       Date::Manip::Changes5
184           Change log for Date::Manip 5.xx
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186       Date::Manip::Changes5to6
187           Differences between version 5.xx and 6.00 (including information on
188           upgrading); this contains more details than the Migration5to6
189           document.
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191       Date::Manip::Changes6
192           Change log for Date::Manip 6.xx
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194       Date::Manip::Misc
195           Miscellaneous information about Date::Manip (who should use it;
196           acknowledgments).
197
198           Since many other date/time modules exist, some of which may do the
199           specific operation(s) you need faster, be sure to read "SHOULD I
200           USE DATE::MANIP" in Date::Manip::Misc before deciding which of the
201           Date and Time modules from CPAN is for you.  However, if you want
202           one module to do it all, Date::Manip is the one to use.
203
204       Date::Manip::History
205           Musings on the history of Date::Manip written around it's 20th
206           birthday.
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208       Date::Manip::Problems
209           Common problems and instructions for reporting bugs.
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211       Date::Manip::Examples
212           Examples of how to use Date::Manip.
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LICENSE

215       This script is free software; you can redistribute it and/or modify it
216       under the same terms as Perl itself.
217

AUTHOR

219       Sullivan Beck (sbeck@cpan.org)
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223perl v5.34.0                      2021-11-23                    Date::Manip(3)
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