East-Saskatchewan -> Saskatchewan [forwarded with permission]

[Arthur David Olson]

> Date: Tue, 27 Oct 92 13:04:32 PST
> From: eggert at twinsun.com (Paul Eggert)
> Message-Id: <9210272104.AA11841 at farside.twinsun.com>
> To: ado at ncifcrf.gov
> Subject: East-Saskatchewan -> Saskatchewan
> 
> W. Jones <jones at skdad.usask.ca> writes that all of Saskatchewan is on CST year
> round.  I'll enclose his comments at the end of this message.  So I propose
> the following patch to the tz package:
> 
> *** northamerica	Thu Apr 23 10:34:33 1992
> --- northamerica.fix	Tue Oct 27 12:58:38 1992
> ***************
> *** 215,220 ****
> --- 215,224 ----
>   # be same as Pacific.  Stick with rules posted in 1988 until more authoritative
>   # information is available.
>   
> + # From W. Jones (October 27, 1992):
> + # Since (I believe) around 1964, all of Saskatchewan is on CST year round,
> + # by law [the U.S. Naval Observatory notwithstanding].
> + 
>   # Rule	NAME	FROM	TO	TYPE	IN	ON	AT	SAVE	LETTER/S
>   Rule	Canada	1969	max	-	Oct	lastSun	2:00	0	S
>   Rule	Canada	1969	1986	-	Apr	lastSun	2:00	1:00	D
> ***************
> *** 226,232 ****
>   Zone	Canada/Atlantic		-4:00	Canada		A%sT
>   Zone	Canada/Eastern		-5:00	Canada		E%sT
>   Zone	Canada/Central		-6:00	Canada		C%sT
> ! Zone	Canada/East-Saskatchewan	-6:00	-	CST # No DST as of 1987
>   Zone	Canada/Mountain		-7:00	Canada		M%sT
>   Zone	Canada/Pacific		-8:00	Canada		P%sT
>   Zone	Canada/Yukon		-9:00	Canada		Y%sT
> --- 230,236 ----
>   Zone	Canada/Atlantic		-4:00	Canada		A%sT
>   Zone	Canada/Eastern		-5:00	Canada		E%sT
>   Zone	Canada/Central		-6:00	Canada		C%sT
> ! Zone	Canada/Saskatchewan	-6:00	-		CST
>   Zone	Canada/Mountain		-7:00	Canada		M%sT
>   Zone	Canada/Pacific		-8:00	Canada		P%sT
>   Zone	Canada/Yukon		-9:00	Canada		Y%sT
> 
> 
> Here are Jones's comments:
> 
> Date: Tue, 27 Oct 92 14:37:34 CST
> From: jones at skdad.usask.ca (W. Jones)
> To: eggert at twinsun.com
> Cc: wright at sask.usask.ca
> Organization: University of Saskatchewan, Saskatoon, Canada
> 
> ... for this site, in order to follow local time correctly
> requires choosing the ruleset named "East-Saskatchewan".  Sounds
> plausible, until you consider that the measure of places for which a
> ruleset "Saskatchewan" or "West-Saskatchewan" applies is zero.
> 
> How did this come about?  Since (I believe) around 1964, all of
> Saskatchewan is on CST year round, by law; but since that distinction
> makes us rebels to North American convention, it tends to get left out of
> discussions for simplicity.  Thus when the timezone package appeared in
> 1987, lo and behold we were lumped with the other Central places, as
> implied in this table in the documentation:
> 
> # From U. S. Naval Observatory (January 19, 1989):
> # CANADA   NEW FDL    3.5H BEHIND UTC    ST.JOHN'S
> # CANADA   NEW FDL    1.5H BEHIND UTC    APR 3 - OCT 29
> # CANADA   ATLANTIC   4 H  BEHIND UTC    HALIFAX
> # CANADA   ATLANTIC   3 H  BEHIND UTC    APR 3 - OCT 29
> # CANADA   EASTERN    5 H  BEHIND UTC    TORONTO, MONTREAL, OTTAWA
> # CANADA   EASTERN    4 H  BEHIND UTC    APR 3 - OCT 29
> # CANADA   CENTRAL    6 H  BEHIND UTC    REGINA, WINNIPEG
> # CANADA   CENTRAL    5 H  BEHIND UTC    APR 3 - OCT 29
> # CANADA   MOUNTAIN   7 H  BEHIND UTC    CALGARY, EDMONTON
> # CANADA   MOUNTAIN   6 H  BEHIND UTC    APR 3 - OCT 29
> # CANADA   PACIFIC    8 H  BEHIND UTC    VANCOUVER
> # CANADA   PACIFIC    7 H  BEHIND UTC    APR 3 - OCT 29
> # CANADA   YUKON      SAME AS PACIFIC    DAWSON
> 
> I complained, and the eventual result was the adjustment below:
> 
> # Zone  NAME                    GMTOFF  RULES/SAVE      FORMAT  [UNTIL]
> # Bob Devine says that DST *is* observed in Newfoundland
> Zone    Canada/Newfoundland     -3:30   Canada          N%sT
> Zone    Canada/Atlantic         -4:00   Canada          A%sT
> Zone    Canada/Eastern          -5:00   Canada          E%sT
> Zone    Canada/Central          -6:00   Canada          C%sT
> Zone    Canada/East-Saskatchewan        -6:00   -       CST # No DST as of 1987
> Zone    Canada/Mountain         -7:00   Canada          M%sT
> Zone    Canada/Pacific          -8:00   Canada          P%sT
> 
> apparently the U.S. Naval Observatory was believed infallible, thus the
> fellow from Saskatchewan must be following some kooky (and new) local
> practice, thus we'll just throw him a sop....