|
1 | | -# @(#)australasia 7.64 |
| 1 | +# @(#)australasia 7.65 |
2 | 2 | # This file also includes Pacific islands. |
3 | 3 |
|
4 | 4 | # Notes are at the end of this file |
|
7 | 7 |
|
8 | 8 | # Australia |
9 | 9 |
|
| 10 | +# Please see the notes below for the controversy about "EST" versus "AEST" etc. |
| 11 | + |
10 | 12 | # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |
11 | 13 | Rule Aus 1917 only - Jan 1 0:01 1:00 - |
12 | 14 | Rule Aus 1917 only - Mar 25 2:00 0 - |
@@ -359,7 +361,7 @@ Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror |
359 | 361 | # Papua New Guinea |
360 | 362 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
361 | 363 | Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 |
362 | | - 9:48:40 - PMMT 1895 # Port Moresby Mean Time |
| 364 | + 9:48:32 - PMMT 1895 # Port Moresby Mean Time |
363 | 365 | 10:00 - PGT # Papua New Guinea Time |
364 | 366 |
|
365 | 367 | # Pitcairn |
@@ -399,6 +401,8 @@ Rule Tonga 1999 only - Oct 7 2:00s 1:00 S |
399 | 401 | Rule Tonga 2000 only - Mar 19 2:00s 0 - |
400 | 402 | Rule Tonga 2000 only - Nov 4 2:00s 1:00 S |
401 | 403 | Rule Tonga 2001 only - Jan 27 2:00s 0 - |
| 404 | +Rule Tonga 2001 only - Nov 25 2:00s 1:00 S |
| 405 | +Rule Tonga 2002 only - Mar 3 2:00s 0 - |
402 | 406 | # Zone NAME GMTOFF RULES FORMAT [UNTIL] |
403 | 407 | Zone Pacific/Tongatapu 12:19:20 - LMT 1901 |
404 | 408 | 12:20 - TOT 1941 # Tonga Time |
@@ -473,7 +477,7 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 |
473 | 477 | # Thomas G. Shanks, The International Atlas (5th edition), |
474 | 478 | # San Diego: ACS Publications, Inc. (1999). |
475 | 479 | # |
476 | | -# Gwillim Law <[email protected]> writes that a good source |
| 480 | +# Gwillim Law writes that a good source |
477 | 481 | # for recent time zone data is the International Air Transport |
478 | 482 | # Association's Standard Schedules Information Manual (IATA SSIM), |
479 | 483 | # published semiannually. Law sent in several helpful summaries |
@@ -535,12 +539,93 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 |
535 | 539 | # prefixed by the word `Australian' when referring to local times; |
536 | 540 | # time announcements on that service, naturally enough, are made in UTC. |
537 | 541 |
|
538 | | -# From Arthur David Olson (March 8 1992): |
| 542 | +# From Arthur David Olson (1992-03-08): |
539 | 543 | # Given the above, what's chosen for year-round use is: |
540 | 544 | # CST for any place operating at a GMTOFF of 9:30 |
541 | 545 | # WST for any place operating at a GMTOFF of 8:00 |
542 | 546 | # EST for any place operating at a GMTOFF of 10:00 |
543 | 547 |
|
| 548 | +# From Paul Eggert (2001-04-05), summarizing a long discussion about "EST" |
| 549 | +# versus "AEST" etc.: |
| 550 | +# |
| 551 | +# I see the following points of dispute: |
| 552 | +# |
| 553 | +# * How important are unique time zone abbreviations? |
| 554 | +# |
| 555 | +# Here I tend to agree with the point (most recently made by Chris |
| 556 | +# Newman) that unique abbreviations should not be essential for proper |
| 557 | +# operation of software. We have other instances of ambiguity |
| 558 | +# (e.g. "IST" denoting both "Israel Standard Time" and "Indian |
| 559 | +# Standard Time"), and they are not likely to go away any time soon. |
| 560 | +# In the old days, some software mistakenly relied on unique |
| 561 | +# abbreviations, but this is becoming less true with time, and I don't |
| 562 | +# think it's that important to cater to such software these days. |
| 563 | +# |
| 564 | +# On the other hand, there is another motivation for unambiguous |
| 565 | +# abbreviations: it cuts down on human confusion. This is |
| 566 | +# particularly true for Australia, where "EST" can mean one thing for |
| 567 | +# time T and a different thing for time T plus 1 second. |
| 568 | +# |
| 569 | +# * Does the relevant legislation indicate which abbreviations should be used? |
| 570 | +# |
| 571 | +# Here I tend to think that things are a mess, just as they are in |
| 572 | +# many other countries. We Americans are currently disagreeing about |
| 573 | +# which abbreviation to use for the newly legislated Chamorro Standard |
| 574 | +# Time, for example. |
| 575 | +# |
| 576 | +# Personally, I would prefer to use common practice; I would like to |
| 577 | +# refer to legislation only for examples of common practice, or as a |
| 578 | +# tiebreaker. |
| 579 | +# |
| 580 | +# * Do Australians more often use "Eastern Daylight Time" or "Eastern |
| 581 | +# Summer Time"? Do they typically prefix the time zone names with |
| 582 | +# the word "Australian"? |
| 583 | +# |
| 584 | +# My own impression is that both "Daylight Time" and "Summer Time" are |
| 585 | +# common and are widely understood, but that "Summer Time" is more |
| 586 | +# popular; and that the leading "A" is also common but is omitted more |
| 587 | +# often than not. I just used AltaVista advanced search and got the |
| 588 | +# following count of page hits: |
| 589 | +# |
| 590 | +# 1,103 "Eastern Summer Time" AND domain:au |
| 591 | +# 971 "Australian Eastern Summer Time" AND domain:au |
| 592 | +# 613 "Eastern Daylight Time" AND domain:au |
| 593 | +# 127 "Australian Eastern Daylight Time" AND domain:au |
| 594 | +# |
| 595 | +# Here "Summer" seems quite a bit more popular than "Daylight", |
| 596 | +# particularly when we know the time zone is Australian and not US, |
| 597 | +# say. The "Australian" prefix seems to be popular for Eastern Summer |
| 598 | +# Time, but unpopular for Eastern Daylight Time. |
| 599 | +# |
| 600 | +# For abbreviations, tools like AltaVista are less useful because of |
| 601 | +# ambiguity. Many hits are not really time zones, unfortunately, and |
| 602 | +# many hits denote US time zones and not Australian ones. But here |
| 603 | +# are the hit counts anyway: |
| 604 | +# |
| 605 | +# 161,304 "EST" and domain:au |
| 606 | +# 25,156 "EDT" and domain:au |
| 607 | +# 18,263 "AEST" and domain:au |
| 608 | +# 10,416 "AEDT" and domain:au |
| 609 | +# |
| 610 | +# 14,538 "CST" and domain:au |
| 611 | +# 5,728 "CDT" and domain:au |
| 612 | +# 176 "ACST" and domain:au |
| 613 | +# 29 "ACDT" and domain:au |
| 614 | +# |
| 615 | +# 7,539 "WST" and domain:au |
| 616 | +# 68 "AWST" and domain:au |
| 617 | +# |
| 618 | +# This data suggest that Australians tend to omit the "A" prefix in |
| 619 | +# practice. The situation for "ST" versus "DT" is less clear, given |
| 620 | +# the ambiguities involved. |
| 621 | +# |
| 622 | +# * How do Australians feel about the abbreviations in the tz database? |
| 623 | +# |
| 624 | +# If you just count Australians on this list, I count 2 in favor and 3 |
| 625 | +# against. One of the "against" votes (David Keegel) counseled delay, |
| 626 | +# saying that both AEST/AEDT and EST/EST are widely used and |
| 627 | +# understood in Australia. |
| 628 | + |
544 | 629 | # From Paul Eggert (1995-12-19): |
545 | 630 | # Shanks reports 2:00 for all autumn changes in Australia and New Zealand. |
546 | 631 | # Mark Prior < [email protected]> writes that his newspaper |
@@ -756,6 +841,28 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 |
756 | 841 | # # The state of VICTORIA.. [ Courtesy of Vic. Dept of Premier + Cabinet ] |
757 | 842 | # # [ Nov 1990 ] |
758 | 843 |
|
| 844 | +# From Scott Harrington (2001-08-29): |
| 845 | +# On KQED's "City Arts and Lectures" program last night I heard an |
| 846 | +# interesting story about daylight savings time. Dr. John Heilbron was |
| 847 | +# discussing his book "The Sun in the Church: Cathedrals as Solar |
| 848 | +# Observatories"[1], and in particular the Shrine of Remembrance[2] located |
| 849 | +# in Melbourne, Australia. |
| 850 | +# |
| 851 | +# Apparently the shrine's main purpose is a beam of sunlight which |
| 852 | +# illuminates a special spot on the floor at the 11th hour of the 11th day |
| 853 | +# of the 11th month (Remembrance Day) every year in memory of Australia's |
| 854 | +# fallen WWI soldiers. And if you go there on Nov. 11, at 11am local time, |
| 855 | +# you will indeed see the sunbeam illuminate the special spot at the |
| 856 | +# expected time. |
| 857 | +# |
| 858 | +# However, that is only because of some special mirror contraption that had |
| 859 | +# to be employed, since due to daylight savings time, the true solar time of |
| 860 | +# the remembrance moment occurs one hour later (or earlier?). Perhaps |
| 861 | +# someone with more information on this jury-rig can tell us more. |
| 862 | +# |
| 863 | +# [1] http://www.hup.harvard.edu/catalog/HEISUN.html |
| 864 | +# [2] http://www.shrine.org.au |
| 865 | + |
759 | 866 | # New South Wales |
760 | 867 |
|
761 | 868 | # From Arthur David Olson: |
@@ -1120,6 +1227,12 @@ Zone Pacific/Wallis 12:15:20 - LMT 1901 |
1120 | 1227 | # From Rives McDow (2000-12-01): |
1121 | 1228 | # Tonga is observing DST as of 2000-11-04 and will stop on 2001-01-27. |
1122 | 1229 |
|
| 1230 | +# From Rives McDow (2001-07-17): |
| 1231 | +# The Kingdom of Tonga will move to DST at 0200 local time on Sunday, |
| 1232 | +# November 25, 2001 and revert back to standard time at 0300 local |
| 1233 | +# time on Sunday, March 3, 2002. |
| 1234 | + |
| 1235 | + |
1123 | 1236 | ############################################################################### |
1124 | 1237 |
|
1125 | 1238 | # The International Date Line |
|
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