As per a request from someone last week, I decided to check my information concerning the time zoning for Inuvik, NWT Canada. I have distinct memory of Inuvik being in the Mountain zone in 1974, and of a phone call to the airport there around 1979-80 where they said they were on MT but had been on PT but had changed to MT, and when I asked why they said that the main reason was that they wanted to be on the same time as Edmonton for commercial reasons. I would place the phone call was in May, because both the US and the NWT were on daylight time then and I asked for the time of sunrise and sunset, and was quoted a time of sunrise and sunset consonant with MDT (about 3 hours ahead of Inuvik's LMT) and a length of daylight of about 19 hours (sunrise at 05:?? and sunset at 00:??). The only written source I have on hand is the Nautical Almanac standard time charts from the early 60s to the late 80s, a rather unreliable source because the Almanac is printed >2 years in advance; for example, the charts have the US on daylight time during all of the 1974-5 winter when we were not; and the 1987 Almanac, in which the time chart is stated as "corrected to September 1984" has the UK ending BST on October 11 when in fact it ended October 25. (I believe that the UK and the rest of the EC had a deal to synchronize the end of summer time on the second Sunday in October in 1984-6, but that this deal fell apart and the UK continued to use summer time in October and the rest of the EC didn't.) The 1972 Almanac with its standard time chart "corrected to April 1970" states that Inuvik would have been on PT, being in "Canada, NWT west of 120" as well as several editions previous. The 1973 Almanac "corrected to September 1970" has Inuvik on MT as well as do all future editions, as part of "Canada, NWT west of 102". So "recent" to the two people I talked with at the airport could have referred to 1970, and the implication from the Almanac would be that the change from PT to MT would have been on the last Sunday in April of that year, and that my own recollection of Inuvik being on PT for a time during the mid-late 70s after being on MT in 1974 is wrong. I would, however, take Whitman and/or Shanks word on the matter before I would take the Almanac's due to its lead time problem. Is/was there a newspaper in Inuvik in those years? Examination of sunrise/sunset times, especially in February, March, April and November, would be of interest. Anyhow, those are my own recollections/info... Chris Carrier