README revision 1.15
11.7SchristosREADME for the tz distribution 21.7Schristos 31.15Schristos"Where do I set the hands of the clock?" -- Les Tremayne as The King 41.15Schristos"Oh that--you can set them any place you want." -- Frank Baxter as The Scientist 51.4Sjtc (from the Bell System film "About Time") 61.4Sjtc 71.14SchristosThe Time Zone Database (called tz, tzdb or zoneinfo) contains code and 81.8Schristosdata that represent the history of local time for many representative 91.8Schristoslocations around the globe. It is updated periodically to reflect 101.8Schristoschanges made by political bodies to time zone boundaries, UTC offsets, 111.8Schristosand daylight-saving rules. 121.8Schristos 131.12SchristosSee <https://www.iana.org/time-zones/repository/tz-link.html> or the 141.13Schristosfile tz-link.html for how to acquire the code and data. Once acquired, 151.12Schristosread the comments in the file 'Makefile' and make any changes needed 161.5Skleinkto make things right for your system, especially if you are using some 171.5Skleinkplatform other than GNU/Linux. Then run the following commands, 181.5Skleinksubstituting your desired installation directory for "$HOME/tzdir": 191.5Skleink 201.5Skleink make TOPDIR=$HOME/tzdir install 211.13Schristos $HOME/tzdir/usr/bin/zdump -v America/Los_Angeles 221.4Sjtc 231.14SchristosThis database of historical local time information has several goals: 241.6Smlelstv 251.14Schristos * Provide a compendium of data about the history of civil time that 261.14Schristos is useful even if not 100% accurate. 271.4Sjtc 281.14Schristos * Give an idea of the variety of local time rules that have existed 291.14Schristos in the past and thus may be expected in the future. 301.4Sjtc 311.14Schristos * Test the generality of the local time rule description system. 321.4Sjtc 331.4SjtcThe information in the time zone data files is by no means authoritative; 341.9Schristosfixes and enhancements are welcome. Please see the file CONTRIBUTING 351.9Schristosfor details. 361.4Sjtc 371.9SchristosThanks to these Time Zone Caballeros who've made major contributions to the 381.9Schristostime conversion package: Keith Bostic; Bob Devine; Paul Eggert; Robert Elz; 391.4SjtcGuy Harris; Mark Horton; John Mackin; and Bradley White. Thanks also to 401.4SjtcMichael Bloom, Art Neilson, Stephen Prince, John Sovereign, and Frank Wales 411.4Sjtcfor testing work, and to Gwillim Law for checking local mean time data. 421.8SchristosThanks in particular to Arthur David Olson, the project's founder and first 431.9Schristosmaintainer, to whom the time zone community owes the greatest debt of all. 441.4SjtcNone of them are responsible for remaining errors. 451.4Sjtc 461.10Schristos----- 471.10Schristos 481.10SchristosThis file is in the public domain, so clarified as of 2009-05-17 by 491.10SchristosArthur David Olson. The other files in this distribution are either 501.10Schristospublic domain or BSD licensed; see the file LICENSE for details. 51