abe@mentor.cc.purdue.edu (Vic Abell) (05/21/91)
In article <7495@mace.cc.purdue.edu>, abe@mace.cc.purdue.edu I asked: > Does anyone have a list of the possible time zone abbreviations that > can appear in mail Date: lines? From responses to my comp.mail.misc inquiry, a scan of mail headers and examination of BSD timezone.c sources, I have accumulated the attached list. Special thanks goes to Stephen J. Walick <steve@nshore.ncoast.org> who pointed out the list of time zones in .../libc/dateok.c of Henry Spencer's C News sources. Some of the strangest of these time zone abbreviations come from BITNET mail headers, where adherence to RFC 822 appears to be a little lax. :-) Where I am unsure of the exact wording for an abbreviation I have indicated the geographical area where the abbreviation seems to be in use. The list is incomplete -- I know of several other abbreviations I haven't yet been able to interpret. The list may also contain errors -- I welcome corrections. Vic Abell local + this Zone = UTC Description ACSST -10:30 Central Australian Summer ACST -9:30 Central Australian Standard ADT 3:00 Atlantic N.A. Daylight AESST -11:00 Eastern Australian Summer AEST -10:00 Eastern Australian Standard AHST 10:00 Alaska-Hawaii Standard AST 4:00 Atlantic N.A. Standard AT -2:00 Azores AWSST -9:00 Western Australian Summer AWST -8:00 Western Australian Standard BRA 3:00 Brazil BST -1:00 British Summer (also Brazilian Standard) BT -3:00 Baghdad (also Bering) CADT -10:30 Central Australian Daylight CAST 0:00 Central Australian Standard CAT 10:00 Central Alaskan CCT -8:00 China Coast CDT 5:00 Central N.A. Daylight CET -1:00 Central European CET DST -2:00 Central European Daylight CST 6:00 Central N.A. Standard DNT -1:00 Dansk Normal EAST -10:00 East Australian Standard EDT 4:00 Eastern N.A. Daylight (also Eastern Australian Daylight) EET -2:00 Eastern European EET DST -3:00 Eastern European Daylight EMT -1:00 Norway EST 5:00 Eastern N.A. Standard (also Eastern Australian Standard) FST -1:00 French Standard FWT -2:00 French Winter GMT 0:00 Greenwich GST -10:00 Guam Standard HDT 9:00 Hawaiian Daylight HMT -3:00 Hellas HST 10:00 Hawaiian Standard IDLE -12:00 International Dateline, East IDLW 12:00 International Dateline, West IST -2:00 Israeli Standard (also Indian Standard) IT -3:30 Iran ITA -1:00 Italy JST -9:00 Japanese Standard JT -7:30 Java KST -9:00 Korean Standard LIGT -10:00 Melbourne, Australia MAL -8:00 Malaysia MAT -3:00 Turkey MDT 6:00 Mountain N.A. Daylight MEST -2:00 Middle European Summer MET -1:00 Middle European MET DST -2:00 Middle European Daylight MEWT -1:00 Middle European Winter MEX 6:00 Mexico MEZ -1:00 Middle European MST 7:00 Mountain N.A. Standard MT -8:30 Moluccas NDT 2:30 Newfoundland Daylight NFT 3:30 Newfoundland NOR -1:00 Norway NST 3:30 Newfoundland Standard (also North Sumatran Standard) NT 11:00 Nome NZDT -13:00 New Zealand Daylight NZST -12:00 New Zealand NZT -12:00 New Zealand PDT 7:00 Pacific N.A. Daylight PST 8:00 Pacific N.A. Standard SADT -10:30 South Australian Daylight SAST -9:30 South Australian Standard SET -1:00 European -- Prague, Vienna SST -2:00 Swedish Summer (also South Sumatran and Singapore Standard) SWT -1:00 Swedish TST -3:00 Turkish Standard UT 0:00 Universal UTC 0:00 Universal Time Coordinated WADT -8:00 Western Australian Daylight WAST -7:00 Western Australian Standard WAT -1:00 West African WDT -9:00 Western Australian Daylight WET 0:00 Western European WET DST -1:00 Western European Daylight WST -8:00 Western Australian Standard WUT -1:00 Austria YDT 8:00 Yukon Daylight YST 9:00 Yukon Standard ZP4 4:00 GMT + 4 hours ZP5 5:00 GMT + 5 hours ZP6 6:00 GMT + 6 hours
geoff@world.std.com (Geoff Collyer) (05/22/91)
Vic Abell: >Special thanks goes to Stephen J. Walick <steve@nshore.ncoast.org> >who pointed out the list of time zones in .../libc/dateok.c of Henry >Spencer's C News sources. [Make that Geoff Collyer's and Henry Spencer's C News sources. In this case, the code comes from me, Mark Moraes and Rich Wales via Rayan Zachariassen.] The currently-available C News time zone table is known to contain errors; the people we cribbed it from had errors in their tables. So don't take it too seriously. >The list is incomplete -- I know of several other abbreviations I haven't >yet been able to interpret. The list may also contain errors -- I welcome >corrections. The basic problems are: local goverments change the definitions (e.g. in the USSR now, where some of Stalin's time changes are being reversed or exaggerated); there are conflicts (e.g. how many countries claim IST and IDT?); and people seem to just make them up as they go along. The solution is to abolish use of alphabetic time zone names, which RFCs 1122/1123 also encourage. Alphabetic time zone names just don't work. (Well, "GMT" is fairly well understood.) -- Geoff Collyer world.std.com!geoff, uunet.uu.net!geoff