[Fwd: time in Nunavut]

[Antoine Leca]

Rives McDow <rmcdow at enteles.com> wrote the attached message in the IETF-calendar
mailing list, about a new change of timezones in Nunavut.

I tried to find more informations about the current timezones in this area, and it
appears that there is a problem about current datas, concerning America/Pangnirtung:
<http://www.arctictravel.com/chapters/pangpage.html> says they operate under
Eastern Time (our datas give Atlantic time).

Outside this problem, I have tried to draft the change as the news says.  Contrary
to what Rives thought, it appears that the new timezone will be Central Time, not
Eastern Time (that is, Iqaluit which is in the Baffin Region will change from EDT to
CST, setting their clocks back two hours).  As we know, these kinds of change
yield problem, because some moments in the gap are not clearly defined as either
EDT or CST... I then drafted two lines for representing it.

I also created a new timezone for the Kitikmeot region, to differentiate it from the
Yellowknife region which is still in (the remaining of) Northern Territories, and thus
still operate Mountain Time. I named it America/Cambridge_Bay, after the most populated
"city" (1,351 inhabitants according to <http://www.arctictravel.com/chapters/cambridgepage.html>).


Please review the attached changes to confirm it is OK. At least, the year of change
for America/Pangnirtung should be established (perhaps by placing America/Pangnirtung
in Eastern Time since 1884).

Antoine
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From: "Rives McDow" <rmcdow at enteles.com>
Subject: time in Nunavut
Date: Sat, 04 Sep 1999 09:36:55 -0700
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--- northamerica.99e	Tue Aug 17 20:09:08 1999
+++ northamerica	Mon Sep  6 15:21:14 1999
@@ -888,6 +888,29 @@
 #	* O.I.C. 1980/02 established DST.
 #	* O.I.C. 1987/056 changed DST to Apr firstSun 2:00 to Oct lastSun 2:00.
 # Shanks says Yukon's 1973-10-28 switch was at 2:00; go with Englander.
+#
+# From Antoine Leca (1999-09-06):
+# According to <http://www.arctictravel.com/chapters/travelinfopage.html>,
+# Nunavut only uses three timezones, namely Mountain Time for Kitikmeot,
+# Central Time for Kivalliq alias Keematin, and Eastern Time for (most of)
+# the Baffin Region.  This means that at an unknown date, Pangnirtung
+# moves from Atlantic Time to Eastern Time. This is confirmed by
+# <http://www.arctictravel.com/chapters/pangpage.html>.
+#
+# From Rives McDow <rmcdow at enteles.com> (1999-09-04):
+# The new territory of Nunavut [created 1999-04-01], in what was formerly
+# part of the Northwest Territory in Canada, moved very quickly to
+# incorporate the whole territory into one time zone.  The change
+# announcement can be viewed at
+# <http://www.nunatsiaq.com/nunavut/nvt90903_13.html>.
+#
+# From Antoine Leca (1999-09-06):
+# We then need to create a new timezone for the Kitikmeot region of Nunavut
+# to differentiate it from the Yellowknife region.
+# The hours of the changes are tentatives...
+# Since the eastern part set their clocks back two hours, we anyway
+# have to split the change in two parts.
+
 
 # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
 Rule	NT_YK	1918	only	-	Apr	14	2:00	1:00	D
@@ -903,16 +926,25 @@
 Rule	NT_YK	1987	max	-	Apr	Sun>=1	2:00	1:00	D
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone America/Pangnirtung -4:22:56 -	LMT	1884
-			-4:00	NT_YK	A%sT
+			-4:00	NT_YK	A%sT	19XX
+			-5:00	NT_YK	E%sT	1999 Oct 31 3:00
+			-6:00	-	CST	1999 Oct 31 2:00
+			-5:00	NT_YK	C%sT
 Zone America/Iqaluit	-4:33:52 -	LMT	1884	# Frobisher Bay
-			-5:00	NT_YK	E%sT
-Zone America/Rankin_Inlet -6:08:40 -	LMT	1884
+			-5:00	NT_YK	E%sT	1999 Oct 31 3:00
+			-6:00	-	CST	1999 Oct 31 2:00
+			-6:00	NT_YK	C%sT
+Zone America/Rankin_Inlet -6:08:40 -	LMT	1884	# Kivalliq, Keewatin
+			-6:00	NT_YK	C%sT
+Zone America/Cambridge_Bay -7:37:24 -	LMT	1884	# Kitikmeot
+			-7:00	NT_YK	M%sT	1999 Oct 31 02:00
 			-6:00	NT_YK	C%sT
 Zone America/Yellowknife -7:37:24 -	LMT	1884
 			-7:00	NT_YK	M%sT
 Zone America/Inuvik	-8:54:00 -	LMT	1884
 			-8:00	NT_YK	P%sT	1979 Apr lastSun 2:00
-			-7:00	NT_YK	M%sT
+			-7:00	NT_YK	M%sT	1999 Oct 31 1:00
+			-5:00	NT_YK	E%sT
 Zone America/Whitehorse	-9:00:12 -	LMT	1900 Aug 20
 			-9:00	NT_YK	Y%sT	1966 Jul 1 2:00
 			-8:00	NT_YK	P%sT