Rives McDow <rmcdow@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 --- 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@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