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Paul Eggert ed49cb3d9b Use better URL for new Paraguay law 2 tahun lalu
.gitignore 0b0735c8dd Ignore more non-source files 7 tahun lalu
CONTRIBUTING 12b48faf10 Omit unnecessary hyphens 3 tahun lalu
LICENSE 7097a65277 Clarify LICENSE file 9 tahun lalu
Makefile 67b7bbbbce Improve touches when making tarballs 2 tahun lalu
NEWS b019d3a8b3 Greenland changed standard time already 3 tahun lalu
README b0c24fad44 Rename CONTRIBUTING.md back to CONTRIBUTING 4 tahun lalu
SECURITY 474865615f * SECURITY: New file. 5 tahun lalu
africa 8b9b7c420d Fix typo in transciption of 1905 Lagos paper 3 tahun lalu
antarctica 63ab6ed226 Prefer “°” to “degrees” when quoting source saying former 3 tahun lalu
asctime.c 12b48faf10 Omit unnecessary hyphens 3 tahun lalu
asia 4c3c3e2d34 Fix comments on Lebanon this week 3 tahun lalu
australasia 032f94b0c7 Don’t percent-encode URIs 3 tahun lalu
backward b2e7a66b74 Fix typo in recent Yellowknife change 3 tahun lalu
backzone 12b48faf10 Omit unnecessary hyphens 3 tahun lalu
calendars ce5b21b84e Omit or paraphrase some quotes 4 tahun lalu
checklinks.awk 3620a330c7 Vanguard form now uses links to links 3 tahun lalu
checktab.awk c505851ff0 Improve ‘make check_tables’ test 3 tahun lalu
date.1 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
date.c 3a21b9b190 Prefer fprintf+strerror to perror 3 tahun lalu
difftime.c 6010bddd13 Be consistent about no space between function and ‘(’. 5 tahun lalu
etcetera 02fb5dae53 Move a few links to ‘backward’ 3 tahun lalu
europe b019d3a8b3 Greenland changed standard time already 3 tahun lalu
factory 92c49ba8eb Use STDOFF, not UTOFF, for standard time 6 tahun lalu
iso3166.tab 0aeb026592 Abbreviate “French Southern Territories” 3 tahun lalu
leap-seconds.list b6ee6dfad9 No leap second on 2023-06-30 3 tahun lalu
leapseconds.awk 44499c6fcc Support leap-seconds.list tombstone 3 tahun lalu
localtime.c 5a220576fd Add comments re offtime, timeoff, timelocal 3 tahun lalu
newctime.3 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
newstrftime.3 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
newtzset.3 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
northamerica 032f94b0c7 Don’t percent-encode URIs 3 tahun lalu
private.h 12b48faf10 Omit unnecessary hyphens 3 tahun lalu
southamerica ed49cb3d9b Use better URL for new Paraguay law 2 tahun lalu
strftime.c 91c6dd6276 Use ‘restrict’ more consistently with standards 3 tahun lalu
theory.html 972cb0ee17 * theory.html: fix TOC to match heads. 3 tahun lalu
time2posix.3 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
tz-art.html 1368732ea7 * tz-art.html: Fix typo re xkcd strips vs panels. 3 tahun lalu
tz-how-to.html 12b48faf10 Omit unnecessary hyphens 3 tahun lalu
tz-link.html 0e0b0eb3e5 Revert 2023b’s data changes 3 tahun lalu
tzfile.5 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
tzfile.h 5fd1128e50 * tzfile.h: Add/update implementation limit commentary. 3 tahun lalu
tzselect.8 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
tzselect.ksh de8bf4c727 Update tzselect comment 2 tahun lalu
workman.sh d7f86ac32e Port .txt generation to macOS 3 tahun lalu
zdump.8 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
zdump.c 4b5a27ef9a Port to C23 + !setenv + !localtime_rz 3 tahun lalu
zic.8 27148539e6 Append tzdb arg 4 to .TH lines 3 tahun lalu
zic.c 78542928df Clarify detection of size overflow 3 tahun lalu
ziguard.awk 8599732906 Preserve columns more nicely in vanguard form 3 tahun lalu
zishrink.awk 0f9ac4ff25 Improve zishrink after PACKRATLIST 3 tahun lalu
zone.tab ff606c4c6b Be more specific about Aleutians 3 tahun lalu
zone1970.tab ff606c4c6b Be more specific about Aleutians 3 tahun lalu

README

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 or the
file tz-link.html for how to acquire the code and data. Once acquired,
read the comments in the file 'Makefile' and make any changes needed
to make things right for your system, especially if you are using some
platform other than 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.