freebsd-dev/contrib/tzdata
2018-05-04 10:17:27 +00:00
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africa Import tzdata 2018e 2018-05-04 10:17:27 +00:00
antarctica Import tzdata 2018d 2018-03-24 04:52:29 +00:00
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australasia Import tzdata 2018e 2018-05-04 10:17:27 +00:00
backward Import tzdata 2017c 2017-10-28 18:54:45 +00:00
backzone Import tzdata 2018d 2018-03-24 04:52:29 +00:00
calendars Import tzdata 2017c 2017-10-28 18:54:45 +00:00
checklinks.awk Import tzdata 2017c 2017-10-28 18:54:45 +00:00
checktab.awk Import tzdata 2018d 2018-03-24 04:52:29 +00:00
CONTRIBUTING Import tzdata 2018d 2018-03-24 04:52:29 +00:00
etcetera
europe Import tzdata 2018e 2018-05-04 10:17:27 +00:00
factory
leap-seconds.list Import tzdata 2018c 2018-01-24 06:48:42 +00:00
leapseconds Import tzdata 2018c 2018-01-24 06:48:42 +00:00
leapseconds.awk Import tzdata 2017c 2017-10-28 18:54:45 +00:00
LICENSE Import tzdata 2017c 2017-10-28 18:54:45 +00:00
Makefile Import tzdata 2018e 2018-05-04 10:17:27 +00:00
NEWS Import tzdata 2018e 2018-05-04 10:17:27 +00:00
northamerica Import tzdata 2018d 2018-03-24 04:52:29 +00:00
pacificnew Import tzdata 2018c 2018-01-24 06:48:42 +00:00
README Import tzdata 2018c 2018-01-24 06:48:42 +00:00
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systemv
theory.html Import tzdata 2018e 2018-05-04 10:17:27 +00:00
version Import tzdata 2018e 2018-05-04 10:17:27 +00:00
yearistype.sh
ziguard.awk Import tzdata 2018e 2018-05-04 10:17:27 +00:00
zishrink.awk Import tzdata 2018d 2018-03-24 04:52:29 +00:00
zone1970.tab Import tzdata 2018d 2018-03-24 04:52:29 +00:00
zone.tab Import tzdata 2018d 2018-03-24 04:52:29 +00:00
zoneinfo2tdf.pl MFV r308265: Update tzdata to 2016i. 2016-11-03 23:34:11 +00:00

README for the tz distribution

"What time is it?" -- Richard Deacon as The King
"Any time you want it to be." -- Frank Baxter as The Scientist
					(from the Bell System film "About Time")

The Time Zone Database (often called tz 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 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

Historical local time information has been included here to:

*	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 an idea of the variety that may be
	expected in the future;

*	provide a test of 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.