I agree with Michael D. There are four existing zones that are already on permanent UTC-7: America/Dawson_Creek America/Creston America/Fort_Nelson America/Phoenix None of these zones makes use the DST bit. The time zone is displayed year round as MST instead of PDT. I don't think anybody complains about it. I don't see any compelling reason to treat the two Yukon zones (America/Whitehorse & America/Dawson) any differently than the four existing UTC-7 zones. Consistency within the database is more important than trying to match the wording in each government press release and/or bill. Therefore, America/Whitehorse & America/Dawson should be placed on UTC-7 with no DST bit and they should be given a time zone designation of MST. Keep in mind that in the future, it may be necessary to apply the same rules to America/Vancouver and America/Los_Angeles. Note: The Yukon press release uses the term "Pacific Daylight Saving Time" to refer to UTC-7. https://yukon.ca/en/news/yukon-end-seasonal-time-change Note: The British Columbia (BC) government is waiting to see what California does before it drops the bi-annual time change. In the meantime, the government has already passed an amendment for its Interpretation Act; the amendment defines "Pacific Time" as UTC-7. This makes me cringe. https://news.gov.bc.ca/releases/2019PREM0118-002084 https://www.leg.bc.ca/parliamentary-business/legislation-debates-proceedings... -chris -----Original Message----- From: tz <tz-bounces@iana.org> On Behalf Of Michael H Deckers via tz Sent: March 5, 2020 5:59 AM To: tz@iana.org Subject: Re: [tz] Yukon to move to year-round PDT On 2020-03-05 04:08, Tim Parenti wrote:
+# Beginning 2020-03-08 02:00, use a base offset of -08:00 with 1:00 "permanent" +# DST for Yukon.
I think the current method to deal with "permanent" summer time in tzdb is NOT to use the dst bit; see eg Turkey who are on summer time since 2016. The dst bit is reserved for switches to an alternate offset that is used for less than a year (except for the few historical cases of "war time"). Michael Deckers.