Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!ucsd!orion.oac.uci.edu!ucivax!gateway
From: Christian.Huitema@mirsa.inria.fr (Christian Huitema)
Newsgroups: comp.protocols.iso.x400
Subject: Time zones again.
Message-ID: <9008291545.AA17496@jerry.inria.fr>
Date: 29 Aug 90 15:49:09 GMT
Lines: 83
Approved: usenet@ICS.UCI.EDU

A bug appeared recently in our gateway software between RFC and X.400; the
bug was traced to the occurence of "random" or rather "unexpected" time
zone indicators in the RFC "date" component of the "Received" fields. The
bug was corrected by mapping all these unexpected zones to GMT -- which
is indeed sort of disgusting. By mixing relevant RFC with a message from
Mabry Tyson dated 15 Jan 90 and a message from Jon Postel dated 4 May 1986
(both message were sent to me by Frank Elsner), I have been able to construct
the following list of time zones.

Note that I only need to perform one way mappings, from time zone to "Delta
to UT", and that I am not interested in the reverse mapping. Thus, I want to
build up a list which appears as complete as possible. Also note that the
deltas follow the X.400 convention, e.g. NY is -0500. Comments are welcomed!

Christian Huitema
---------------------
"+0000",	"GMT",	/* Greenwich Mean Time */
"+0000",	"UT",	/* Universal Time */
"+0100",	"BST",	/* British Summer Time */
"+0100",	"CET",	/* Central European Time */
"+0100",	"DNT",	/* ?? From Denmark */
"+0100",	"FWT",	/* French Summer Time) */
"+0100",	"MET",	/* Middle Europe Time */
"+0100",	"MEWT",	/* Middle Europe Winter Time */
"+0100",	"MEZ",	/* Middle Europe Zone(?) From Bern, Switzerland */
"+0100",	"NOR",	/* ?? From Norway */
"+0100",	"SWT",	/* Swedish Winter Time  */
"+0100",	"WET",	/* Western European Time */
"+0200",	"EET",	/* Eastern European Time, USSR Zone 1 */
"+0200",	"FST",	/* French Winter Time  */
"+0200",	"MEST",	/* Middle Europe Summer Time */
"+0200",	"SST",	/* Swedish Summer Time */
"+0300",	"BT",	/* Baghdad Time */
"+0300",	"HMT",	/* ?? From Greece */
"+0330",	"IT",	/* Iran Time */
"+0530",	"IST",	/* Indian Standard Time */
"+0630",	"NST",	/* North Sumatra Time */
"+0700",	"SST",	/* South Sumatra Time, USSR Zone 6 */
"+0700",	"WAST",	/* West Australian Standard Time */
"+0730",	"JT",	/* Java Time */
"+0800",	"CCT",	/* China Coast */
"+0800",	"WADT",	/* West Australian Daylight Saving Time */
"+0830",	"MT",	/* Moluccas Time */
"+0900",	"JST",	/* Japan Std Time, USSR Zone 8 */
"+0900",	"KST",	/* ?? Korea Standard Time */
"+0930",	"CAST",	/* Central Australian Standard Time */
"+0930",	"SAST",	/* South Australian Standard Time */
"+1000",	"GST",	/* Guam Std Time, USSR Zone 9 */
"+1000",	"LIGT",	/* ?? From Melbourne, Australia */
"+1030",	"CADT",	/* Central Australian Standard Time */
"+1030",	"SADT",	/* South Australian Daylight S. Time */
"+1200",	"IDLE",	/* International Date Line, East */
"+1200",	"NZST",	/* New Zealand Standard Time (*) */
"+1200",	"NZT",	/* New Zealand Time */
"+1300",	"NZDT",	/* New Zealand Daylight Time (*) */
"-0100",	"SET",	/* ??? */
"-0100",	"WAT",	/* West Africa */
"-0100",	"WAT",	/* West Africa Time */
"-0200",	"AT",	/* Azores Time */
"-0300",	"BST",	/* Brazil Std Time */
"-0330",	"NFT",	/* Newfoundland Time */
"-0330",	"NST",	/* Newfoundland */
"-0400",	"AST",	/* Atlantic Std Time */
"-0400",	"EDT",
"-0400",	"ZP4",	/* GMT +4  hours. */
"-0500",	"CDT",
"-0500",	"EST",	/* Eastern Std Time */
"-0500",	"ZP5",	/* GMT +5  hours. */
"-0600",	"CST",	/* Central Std Time */
"-0600",	"MDT",
"-0600",	"ZP6",	/* GMT +6  hours. */
"-0700",	"MST",	/* Mountain Std Time */
"-0700",	"PDT",
"-0800",	"PST",	/* Pacific Std Time */
"-0900",	"YST",	/* Yukon Std Time */
"-1000",	"AEST",	/* Australian Eastern Standard Time */
"-1000",	"AHST",	/* Alaska-Hawaii */
"-1000",	"CAT",	/* Central Alaska Time */
"-1000",	"EAST",	/* East Australian Standard Time */
"-1030",	"HST",	/* Hawaiian Std Time *Hawaii adopted -1000 in 1947 */
"-1100",	"BT",	/* Bering Time */
"-1100",	"NT",	/* Nome Time */
"-1200",	"IDLW",	/* INternational Date Line, West */