Hi, I work on an application which uses international timezone abbreviations. It makes sense to use the most popular abbr. used within the country, since, clients within the country understand that. I believe tzdata is the best source for this purpose, as people all over the world contribute to it. In our application we always use the abbr., in conjunction with the country, avoiding ambiguities. More examples are CST, EST and PST used both in Australia and US. Thanks -Syed -----Original Message----- From: ephraim@cs.huji.ac.il [mailto:ephraim@cs.huji.ac.il] Sent: Thursday, January 11, 2001 1:41 AM To: Paul Eggert Cc: tz@elsie.nci.nih.gov Subject: IST/IDT [Re: Chamorro Standard Time (new US time zone)] On 10 Jan 2001, Paul Eggert wrote:
1. Is there an "official list" of all the names or labels used to designated time zones
No, unfortunately. And in practice, the names are ambiguous. For example, "IST" means UTC+2 in Israel, but UTC+5:30 in India.
I have to take responsibility for that ambiguity as I coined "IST/IDT" circa 1988. Until then there were three different abbreviations in use: JST Jerusalem Standard Time [Danny Braniss, Hebrew University] IZT Israel Zonal (sic) Time [Prof. Haim Papo, Technion] EEST Eastern Europe Standard Time [used by almost everyone else] Since timezones should be called by country and not capital cities, I ruled out JST. As Israel is in Asia Minor and not Eastern Europe, EEST was equally unacceptable. Since "zonal" was not compatible with any other timezone abbreviation, I felt that 'IST' was the way to go and, indeed, it has received almost universal acceptance in timezone settings in Israeli computers. In any case, I am happy to share timezone abbreviations with India, high on my favorite-country list (and not only because my wife's family is from India). ___________________________________________________________________________ Ephraim Silverberg, CSE System Group, Phone number: 972-2-6585521 Hebrew University, Jerusalem, Israel. Fax number: 972-2-6585439 WWW: http://www.cs.huji.ac.il/~ephraim E-mail: ephraim@cse.huji.ac.il