Module Calendar.Timezone

Description

This module contains all the predefined timezones. Index it with whatever timezone you want to use.

Example: Calendar.Calendar my_cal= Calendar.ISO->set_timezone(Calendar.Timezone["Europe/Stockholm"]);

A simpler way of selecting timezones might be to just give the string to set_timezone ; it indexes by itself:

Calendar.Calendar my_cal= Calendar.ISO->set_timezone("Europe/Stockholm");

Note

Do not confuse this module with Ruleset.Timezone , which is the base class of a timezone object.

"CET" and some other standard abbreviations work too, but not all of them (due to more then one country using them).

Do not call set_timezone too often, but remember the result if possible. It might take some time to initialize a timezone object.

There are about 504 timezones with 127 different daylight saving rules. Most of them historic.

The timezone information comes from ftp://elsie.nci.nih.gov/pub/ and are not made up from scratch. Timezone bugs may be reported to the timezone mailing list, tz@elsie.nci.nih.gov, preferable with a cc to mirar+pike@mirar.org. /Mirar

See also

TZnames

Constant locale: constant Calendar.Timezone.locale = Rule.Timezone
Description: This contains the local timezone, found from various parts of the system, if possible.

Constant localtime

constant Calendar.Timezone.localtime = Rule.Timezone

Description

This is a special timezone, that uses localtime () and tzname to find out what current offset and timezone string to use.

locale uses this if there is no other way of finding a better timezone to use.

This timezone is limited by localtime and libc to the range of time_t, which is a MAXINT on most systems - 13 Dec 1901 20:45:52 to 19 Jan 2038 3:14:07, UTC.