pike.git / lib / modules / Calendar.pmod / tzdata / README

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pike.git/lib/modules/Calendar.pmod/tzdata/README:1: + 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. +  + Unless otherwise specified, all files in the tz code and data are in + the public domain, so clarified as of 2009-05-17 by Arthur David Olson. + The few exceptions are code derived from BSD, which uses the BSD license. +  + Here is a recipe for acquiring, building, installing, and testing the + tz distribution on a GNU/Linux or similar host. +  +  mkdir tz +  cd tz +  wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz' +  gzip -dc tzcode-latest.tar.gz | tar -xf - +  gzip -dc tzdata-latest.tar.gz | tar -xf - +  + Be sure to read the comments in "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/etc/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 the data are 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; + the files currently do not even attempt to cover all time stamps before + 1970, and there are undoubtedly errors even for time stamps since 1970. + If you know that the rules are different from those in a file, by all means + feel free to change a file (and please send the changed version to + tz@iana.org for use in the future). Europeans take note! +  + Thanks to these Timezone 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 timezone community owes the greatest debt of all. + None of them are responsible for remaining errors. +  + Look in <ftp://ftp.iana.org/tz/releases/> for updated versions of these files. +  + Please send comments or information to tz@iana.org.   Newline at end of file added.