proposed changes for Pacific/Truk, Asia/Aktau, Asia/Yerevan

Paul Eggert eggert at twinsun.com
Fri Apr 19 23:06:33 UTC 1996


   Date: Fri, 19 Apr 96 15:20:03 EDT
   From: ado at elsie.nci.nih.gov (Arthur David Olson)

   Changes to Bangalore, the People's Republic of China, and
   Chuuk/Truk may follow.

The Bangalore report was a false alarm: its author had set TZ='GMT+5',
which behaves differently in modern tz versus 1989 tz due to the fact
that modern tz complies with Posix.  (The correct TZ setting for
Bangalore is 'India/Calcutta', but that wasn't his problem.)

Also, the recent message about China from cml1001 at cus.cam.ac.uk
(William C.M. Leung) was about an older version of tz; tzdata96f
already reflects the changes he's talking about.

The Chuuk/Truk report sounded right, though.  A change is proposed below.
It retains the name `Truk' for the time zone name, since it is the
traditional English name for the area and is still in common use.
The proposed change also moves recently added notes around in
`australasia' so that they're at the end, as the file's first comment
suggests.

I also got private email from a correspondent in the Tengiz oil fields
of western Kazakhstan, and enclose a proposed new time zone Asia/Aktau.
His comments suggest that my earlier guesses were wrong about
Asia/Yerevan so I've changed the guesses.  While I was at it I added
proposed commentary about time zones for which we lack solid data (in
Mongolia and Uzbekistan) and a proposed comment giving an alternate
name for Rangoon.


===================================================================
RCS file: RCS/asia,v
retrieving revision 1996.2
retrieving revision 1996.2.1.1
diff -c -r1996.2 -r1996.2.1.1
*** asia	1996/01/27 20:44:36	1996.2
--- asia	1996/04/19 23:01:35	1996.2.1.1
***************
*** 34,39 ****
--- 34,40 ----
  #	4:00	YSK YSD Yerevan (was 3:00)*
  #	4:00	GST GDT	Gulf*
  #	4:30	AFT	Afghanistan*
+ #	5:00	ASK ASD	Aktau (was SHSK, SHSD)*
  #	5:00	ASK ASD	Ashkhabad (was 4:00)*
  #	5:00	BSK BSD Bishkek (was 6:00) (was FSK, FSD)*
  #	5:00	PKT	Pakistan*
***************
*** 82,93 ****
  			4:30	-	AFT
  
  # Armenia
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
  Zone	Asia/Yerevan	2:58:00 -	LMT	1924 May  2
  			3:00	-	YSK	1957 Mar
  			4:00	Russia	YS%s
- # Shanks has Yerevan switching to 3:00 (with Russian DST) in spring 1991,
- # but usno1995 has Armenia at 4:00 (with DST).  Ignore the 1991 switch for now.
  
  # Azerbaijan
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
--- 83,99 ----
  			4:30	-	AFT
  
  # Armenia
+ # From Paul Eggert (1996-04-19):
+ # Shanks has Yerevan switching to 3:00 (with Russian DST) in spring 1991,
+ # but usno1995 has Armenia at 4:00 (with DST).  Assume Yerevan stayed in
+ # sync with Moscow after 1990.
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
  Zone	Asia/Yerevan	2:58:00 -	LMT	1924 May  2
  			3:00	-	YSK	1957 Mar
+ 			4:00	Russia	YS%s	1991 Mar 31 2:00s
+ 			3:00	1:00	YSD	1991 Sep 29 2:00s
+ 			3:00	-	YSK	1992 Jan 19 2:00s
  			4:00	Russia	YS%s
  
  # Azerbaijan
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
***************
*** 133,139 ****
  
  # Burma / Myanmar
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
! Zone	Asia/Rangoon	6:24:40 -	LMT	1880
  			6:25	-	RMT	1920
  			6:30	-	BMT	1942 May
  			9:00	-	JST	1945 May 3
--- 139,145 ----
  
  # Burma / Myanmar
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
! Zone	Asia/Rangoon	6:24:40 -	LMT	1880		# or Yangon
  			6:25	-	RMT	1920
  			6:30	-	BMT	1942 May
  			9:00	-	JST	1945 May 3
***************
*** 576,588 ****
  			2:00	Jordan	EET%s
  
  # Kazakhstan
! # From Shanks (1991):
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
! Zone	Asia/Alma-Ata	5:07:48 -	LMT	1924 May  2
  			5:00	-	AASK	1957 Mar
  			6:00	Russia	AAS%s
! # Shanks has Alma-Ata switching to 5:00 in 1991,
! # but usno1995 has Kazakhstan at 6:00.  Ignore the 1991 switch for now.
  
  # Kirgizstan
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
--- 582,604 ----
  			2:00	Jordan	EET%s
  
  # Kazakhstan
! # From Paul Eggert (1996-04-19):
! # Andrew Evtichov <evti at chevron.com> (1996-04-13) writes that Kazakhstan
! # stayed in sync with Moscow after 1990, and that Aktau is the biggest city
! # in western Kazakhstan.  Follow Shanks before 1991, Evtichov afterwards.
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
! Zone	Asia/Alma-Ata	5:07:48 -	LMT	1924 May  2 # or Almaty
  			5:00	-	AASK	1957 Mar
+ 			6:00	Russia	AAS%s	1991 Mar 31 2:00s
+ 			5:00	1:00	AASD	1991 Sep 29 2:00s
+ 			5:00	-	AASK	1992 Jan 19 2:00s
  			6:00	Russia	AAS%s
! Zone	Asia/Aktau	3:21:04	-	LMT	1924 May  2 # or Aqtau
! 			4:00	-	SHSK	1957 Mar # Fort Shevchenko
! 			5:00	Russia	SHS%s	1991 Mar 31 2:00s
! 			4:00	1:00	ASD	1991 Sep 29 2:00s
! 			4:00	-	ASK	1992 Jan 19 2:00s
! 			5:00	Russia	AS%s
  
  # Kirgizstan
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
***************
*** 685,690 ****
--- 701,709 ----
  			5:00	-	PKT
  
  # Mongolia
+ # Shanks says that Mongolia has three time zones,
+ # but usno1995 and http://www.odci.gov/cia/publications/95fact/802389h.gif
+ # both say that it has just one.
  # Let's comment out the western and eastern Mongolian time zones
  # till we know what their principal towns are.
  # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
***************
*** 862,867 ****
--- 881,888 ----
  			5:00	-	TSK
  # Shanks has Tashkent using DST after 1991, but usno1995 says they don't.
  # Go with usno1995.
+ # http://www.odci.gov/cia/publications/95fact/802389h.gif claims that
+ # Uzbekistan has two time zones, but we lack data about this.
  
  # Vietnam
  # From Paul Eggert <eggert at twinsun.com> (November 18, 1993):
===================================================================
RCS file: RCS/australasia,v
retrieving revision 1996.2
retrieving revision 1996.2.1.1
diff -c -r1996.2 -r1996.2.1.1
*** australasia	1996/01/27 20:44:37	1996.2
--- australasia	1996/04/19 22:55:47	1996.2.1.1
***************
*** 208,217 ****
  # uninhabited
  
  # Kiribati
- # From Paul Eggert (1996-01-22):
- # Today's _Wall Street Journal_ (page 1) reports that Kiribati
- # ``declared it the same day throught the country as of Jan. 1, 1995''
- # as part of the competition to be first into the 21st century.
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
  Zone Pacific/Tarawa	 11:32:04 -	LMT	1901		# Bairiki
  			 12:00	-	NZST
--- 208,213 ----
***************
*** 246,253 ****
  			9:00	-	PLT	1969 Oct
  			10:00	-	GST
  Zone Pacific/Truk	10:07:08 -	LMT	1901
! 			10:00	-	GST	1978 Oct
! 			11:00	-	NCST
  Zone Pacific/Ponape	10:32:52 -	LMT	1901		# Kolonia
  			11:00	-	NCST
  Zone Pacific/Kosrae	10:51:56 -	LMT	1901
--- 242,248 ----
  			9:00	-	PLT	1969 Oct
  			10:00	-	GST
  Zone Pacific/Truk	10:07:08 -	LMT	1901
! 			10:00	-	GST
  Zone Pacific/Ponape	10:32:52 -	LMT	1901		# Kolonia
  			11:00	-	NCST
  Zone Pacific/Kosrae	10:51:56 -	LMT	1901
***************
*** 368,377 ****
  			-10:00	-	THT
  
  # Tonga
- # From Paul Eggert (1996-01-22):
- # Today's _Wall Street Journal_ (page 1) reports that ``Tonga has been plotting
- # to sneak ahead of [New Zealanders] by introducing daylight-saving time.''
- # But since Kiribati has moved the Date Line it's not clear what Tonga will do.
  # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
  Zone Pacific/Tongatapu	12:19:20 -	LMT	1901
  			12:20	-	TMT	1968 Oct
--- 363,368 ----
***************
*** 840,845 ****
--- 831,843 ----
  
  # Johnston data is from usno1995.
  
+ # Kiribati
+ 
+ # From Paul Eggert (1996-01-22):
+ # Today's _Wall Street Journal_ (page 1) reports that Kiribati
+ # ``declared it the same day throught the country as of Jan. 1, 1995''
+ # as part of the competition to be first into the 21st century.
+ 
  # Kwajalein
  
  # In comp.risks 14.87 (26 August 1993), Peter Neumann writes:
***************
*** 855,863 ****
--- 853,877 ----
  # (now called the Marianas) kept American date for quite some time.
  # Ignore this for now, as we have no hard data.  See also Asia/Manila.
  
+ # Micronesia
+ 
+ # Alan Eugene Davis <adavis at kuentos.guam.net> writes (1996-03-16),
+ # ``I am certain, having lived there for the past decade, that "Truk"
+ # (now properly known as Chuuk) ... is in the time zone GMT+10.''
+ #
+ # Shanks writes that Truk switched from GMT+10 to GMT+11 on 1978-10-01;
+ # ignore this for now.
+ 
  # Samoa
  
  # Howse writes that in 1879 the King of Samoa decided to change
  # ``the date in his kingdom from the Antipodean to the American system,
  # ordaining -- by a masterpiece of diplomatic flattery -- that
  # the Fourth of July should be celebrated twice in that year.''
+ 
+ # Tonga
+ 
+ # From Paul Eggert (1996-01-22):
+ # Today's _Wall Street Journal_ (p 1) reports that ``Tonga has been plotting
+ # to sneak ahead of [New Zealanders] by introducing daylight-saving time.''
+ # Since Kiribati has moved the Date Line it's not clear what Tonga will do.



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