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README for the tz distribution

"Where do I set the hands of the clock?" -- Les Tremayne as The King
"Oh that--you can set them any place you want." -- Frank Baxter as The Scientist
					(from the Bell System film "About Time")

The Time Zone Database (called tz, tzdb or zoneinfo) contains code and
data that represent the history of local time for many representative
locations around the globe.  It is updated periodically to reflect
changes made by political bodies to time zone boundaries, UTC offsets,
and daylight-saving rules.

See <https://www.iana.org/time-zones/repository/tz-link.html> or the
file tz-link.html for how to acquire the code and data.

Once acquired, read the leading comments in the file "Makefile"
and make any changes needed to make things right for your system,
especially when using a platform other than current GNU/Linux.

Then run the following commands, substituting your desired
installation directory for "$HOME/tzdir":

	make TOPDIR="$HOME/tzdir" install
	"$HOME/tzdir/usr/bin/zdump" -v America/Los_Angeles

See the file tz-how-to.html for examples of how to read the data files.

This database of historical local time information has several goals:

 * Provide a compendium of data about the history of civil time that
   is useful even if not 100% accurate.

 * Give an idea of the variety of local time rules that have existed
   in the past and thus may be expected in the future.

 * Test the generality of the local time rule description system.

The information in the time zone data files is by no means authoritative;
fixes and enhancements are welcome.  Please see the file CONTRIBUTING
for details.

Thanks to these Time Zone Caballeros who've made major contributions to the
time conversion package: Keith Bostic; Bob Devine; Paul Eggert; Robert Elz;
Guy Harris; Mark Horton; John Mackin; and Bradley White.  Thanks also to
Michael Bloom, Art Neilson, Stephen Prince, John Sovereign, and Frank Wales
for testing work, and to Gwillim Law for checking local mean time data.
Thanks in particular to Arthur David Olson, the project's founder and first
maintainer, to whom the time zone community owes the greatest debt of all.
None of them are responsible for remaining errors.

-----

This file is in the public domain, so clarified as of 2009-05-17 by
Arthur David Olson.  The other files in this distribution are either
public domain or BSD licensed; see the file LICENSE for details.

 Name                                            Last modified      Size  
 Parent Directory                                                     -   
 CVS/                                            05-Oct-2024 05:01    -   
 CONTRIBUTING                                    12-Sep-2024 05:01  3.4K  
 LICENSE                                         25-Oct-2017 05:01  252   
 Makefile                                        12-Sep-2024 05:01   52K  
 Makefile.inc                                    12-Sep-2024 05:01  1.0K  
 NEWS                                            12-Sep-2024 05:01  229K  
 README                                          24-Dec-2023 04:01  2.4K  
 SECURITY                                        22-Oct-2021 16:26  773   
 Theory                                          12-Mar-2017 04:01   38K  
 asctime.c                                       12-Sep-2024 05:01  4.9K  
 calendars                                       17-Aug-2022 05:01  5.4K  
 checktab.awk                                    16-Aug-2014 05:03  5.2K  
 ctime.3                                         17-Sep-2023 05:01   14K  
 difftime.c                                      21-Jan-2024 04:01  1.8K  
 getdate.3                                       12-Feb-2018 04:01  7.2K  
 getdate.c                                       05-Jan-2018 04:01  7.5K  
 leapseconds.awk                                 26-Dec-2013 19:34  2.3K  
 localtime.c                                     12-Sep-2024 05:01   64K  
 offtime.3                                       26-Oct-2017 05:01  1.5K  
 private.h                                       12-Sep-2024 05:01   29K  
 strftime.3                                      26-Oct-2022 05:01  9.7K  
 strftime.c                                      08-Jun-2024 05:01   20K  
 strptime.3                                      08-Sep-2024 05:01  8.8K  
 strptime.c                                      08-Jun-2024 05:01   18K  
 theory.html                                     12-Sep-2024 05:01   64K  
 time2posix.3                                    12-Dec-2022 04:01  4.0K  
 tz-art.html                                     12-Sep-2024 05:01   24K  
 tz-how-to.html                                  17-Sep-2023 05:01   24K  
 tz-link.html                                    12-Sep-2024 05:01   61K  
 tzcode2netbsd                                   12-Jul-2015 05:03  772   
 tzfile.5                                        12-Sep-2024 05:01   19K  
 tzselect.8                                      17-Sep-2023 05:01  3.1K  
 tzselect.ksh                                    12-Sep-2024 05:01   21K  
 tzset.3                                         17-Sep-2023 05:01   10K  
 version                                         12-Sep-2024 05:01    6   
 zdump.8                                         07-Dec-2023 04:01  6.8K  
 zdump.c                                         12-Sep-2024 05:01   33K  
 zic.8                                           12-Sep-2024 05:01   25K  
 zic.c                                           05-Oct-2024 05:01   99K  

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