Where do the zoneinfo data come from?

From Jsorm

Jump to: navigation, search

The zoneinfo data in i18n are derived directly from the Elsie zoneinfo database. These are used for timezone processing on many computer operating systems, as well as in the Java programming language. In order to support Web 2.0 applications, jsorm distributes a specially-compiled version of the zoneinfo files. The zone names in jsorm i18n match the Elsie zoneinfo zone names.

Users of jsorm i18n do not need to understand the structure of the zoneinfo files or even how timezones work. jsorm i18n takes care of all of that for you. All you need to do is provide a moment in time, defined either as the local wall time or the absolute time in Coordinated Universal Time (UTC), as well as the name of the timezone, and jsorm i18n will return to you three pieces of information:

  • The current offset from UTC in seconds
  • Whether or not the time is currently in Daylight Savings Time
  • The short, normally three- or four-letter abbreviation of the current zone, e.g. EST, IDT, PDT

The names of the zones are given in Zoneinfo location names.

Retrieved from "http://jsorm.com/wiki/Where_do_the_zoneinfo_data_come_from%3F"