australasia zoneinfo

[Dave Davey]

I have just modified our Australasia zoneinfo file to take account of
changes in the NSW rule, and have incorporated changes distributed from
Queensland and South Australia over the Australian news recently.
I have also added code for Lord Howe Island (perhaps not in
the most efficient manner possible).  Lord Howe maintains GMT+10:30
when the New South Wales mainland is observing GMT+10:00.  When
the mainland moves to daylight saving time, it adopts the same time,
namely GMT+11:00.  So its "saving" is only 30 minutes.

My complete file follows:

# @(#)australasia	4.1+ (daved mods)
# Incorporates updates for Australia from Robert Elz' australia 1.1
# and further updates from the Australian consulate.

# Australian Data (for states with DST), standard rules
# Includes shift in 1987 to follow Vic/NSW rules for ending DST,
# and shift in 1986 to start DST earlier.

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	Oz	1971	1985	-	Oct	lastSun	2:00	1:00	-
Rule	Oz	1986	max	-	Oct	Sun<=24	2:00	1:00	-
Rule	Oz	1972	only	-	Feb	27	3:00	0	-
Rule	Oz	1973	1986	-	Mar	Sun>=1	3:00	0	-
Rule	Oz	1987	max	-	Mar	Sun<=21	3:00	0	-

# Zone	NAME			GMTOFF	RULES	FORMAT	[UNTIL]
Zone	Australia/Tasmania	10:00	Oz	EST
Zone	Australia/North		9:30	-	CST	# No DST here
Zone	Australia/West		8:00	-	WST	# No DST here
Zone	Australia/South		9:30	SA	CST

# The government seems to change things by regulation, not by changing the act.

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	SA	1971	1985	-	Oct	lastSun	2:00	1:00	-
Rule	SA	1972	1985	-	Mar	Sun>=1	3:00	0	-
Rule	SA	1986	only	-	Mar	16	3:00	0	-
Rule	SA	1986	only	-	Oct	19	2:00	1:00	-
Rule	SA	1987	only	-	Mar	15	3:00	0	-
Rule	SA	1987	max	-	Oct	lastSun	2:00	1:00	-
Rule	SA	1988	only	-	Mar	20	3:00	0	-
Rule	SA	1989	max	-	Mar	Sun<=21	3:00	0	-


# Victoria jumped to a later ending date for DST in 1986 rather than 1987.

Zone	Australia/Victoria	10:00	Oz	EST	1985 Oct lastSun 2:00
				10:00	1:00	EST	1986 Mar Sun<=21 3:00
				10:00	Oz	EST

# New South Wales and subjurisdictions have their own ideas of a fun time.
# Based on law library research by John Mackin (john at basser.cs.su.oz),
# who notes:
#	In Australia, time is not legislated federally, but rather by the
#	individual states.  Thus, while such terms as ``Eastern Standard Time''
#	[I mean, of course, Australian EST, not any other kind] are in common
#	use, _they have NO REAL MEANING_, as they are not defined in the
#	legislation.  This is very important to understand. 
#	I have researched New South Wales time only.

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	NSW	1971	1985	-	Oct	lastSun	2:00	1:00	-
Rule	NSW	1972	only	-	Feb	lastSun	3:00	0	-
Rule	NSW	1973	1981	-	Mar	Sun>=1	3:00	0	-
Rule	NSW	1982	only	-	Apr	4	3:00	0	-
Rule	NSW	1983	1985	-	Mar	Sun>=1	3:00	0	-
Rule	NSW	1986	only	-	Mar	16	3:00	0	-
Rule	NSW	1986	only	-	Oct	19	2:00	1:00	-
Rule	NSW	1987	only	-	Mar	15	3:00	0	-
Rule	NSW	1987	max	-	Oct	lastSun	2:00	1:00	-
Rule	NSW	1988	only	-	Mar	Sun>=1	3:00	0	-
Rule	NSW	1989	only	-	Mar	Sun<=21	3:00	0	-
Rule	NSW	1990	max	-	Mar	Sun>=1	3:00	0	-

# Zone	NAME			GMTOFF	RULES	FORMAT	[UNTIL]
Zone	Australia/NSW		10:00	NSW	EST
Zone	Australia/Broken-Hill	9:00	NSW	???
Zone	Australia/Sturt		9:00	NSW	???
Zone	Australia/Yancowinna	9:30	NSW	???

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	LHI	1971	1985	-	Oct	lastSun	2:00	0:30	-
Rule	LHI	1972	only	-	Feb	lastSun	3:00	0	-
Rule	LHI	1973	1981	-	Mar	Sun>=1	3:00	0	-
Rule	LHI	1982	only	-	Apr	4	3:00	0	-
Rule	LHI	1983	1985	-	Mar	Sun>=1	3:00	0	-
Rule	LHI	1986	only	-	Mar	16	3:00	0	-
Rule	LHI	1986	only	-	Oct	19	2:00	0:30	-
Rule	LHI	1987	only	-	Mar	15	3:00	0	-
Rule	LHI	1987	max	-	Oct	lastSun	2:00	0:30	-
Rule	LHI	1988	only	-	Mar	Sun>=1	3:00	0	-
Rule	LHI	1989	only	-	Mar	Sun<=21	3:00	0	-
Rule	LHI	1990	max	-	Mar	Sun>=1	3:00	0	-

Zone	Australia/LHI		10:30	LHI	???

# Queensland introduced DST for a `trial' period of 1 year
# Based on the Daylight Saving Act 1989, No. 78

# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	QLD	1989	only	-	Oct	29	2:00	1:00	-
Rule	QLD	1990	only	-	Mar	4	2:00	0	-

# Zone	NAME			GMTOFF	RULES	FORMAT	[UNTIL]
Zone	Australia/Queensland	10:00	QLD	EST

# New Zealand, from Elz' asia 1.1
# Elz says "no guarantees"
# Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
Rule	NZ	1974	max	-	Oct	lastSun	2:00	1:00	D
Rule	NZ	1975	max	-	Mar	Sun>=1	3:00	0	S

# Zone	NAME			GMTOFF	RULES/SAVE	FORMAT	[UNTIL]
Zone	NZ			12:00	NZ		NZ%sT	# New Zealand

#
# A footnote here:
#
#	. . .
#	Date: Thu, j19 Feb 87 12:02:17 EST
#	From: Bradley White <seismo!k.cs.cmu.edu!bww>
#	. . .
#	I am including a description of Australian time zones. . .
#	this stuff is definitely accurate.
#	. . .
#	a) Australian Eastern Time: (EST = GMT+10:00, EDT = GMT+11:00)
#	. . .
#	Summer of 86/87 - present (current legislation):
#		third Sun Oct 02:00 EST -> third LSun Mar 02:00 EST
#
# If this turns out to be true, substitute Sun<=21 (third Sunday in October)
# for Sun<=24 (next-to-last Sunday in October) above. . .some time before
# October 1988, the first time it makes a difference.
#