[Meticulous] and well researched article on Alaska time zones

[Olson, Arthur David (NIH/NCI) [E]]

Here's database-relevant material from the 2001 "Alaska History" article:

On September 20 [1979]...DOT...officials decreed that on April 27, 1980, Juneau and other nearby communities would move to Yukon Time. Sitka, Petersburg, Wrangell, and Ketchikan, however, would remain on Pacific Time.

...on September 22, 1980, DOT Secretary Neil E. Goldschmidt rescinded the Department's September 1979 decision. Juneau and other communities in northern Southeast reverted to Pacific Time on October 26.

On October 28 [1983]...the Metlakatla Indian Community Council voted unanimously to keep the reservation on Pacific Time.

According to DOT official Joanne Petrie, Indian reservations are not bound to follow time zones imposed by neighboring jurisdictions.

(The last is consistent with how the database now handles the Navajo Nation.)

Additional material:

http://en.wikipedia.org/wiki/Annette_Island
The largest settlement on the island is Metlakatla.

http://en.wikipedia.org/wiki/Metlakatla,_Alaska
Time zone 	Pacific (PST) (UTC-8)
 - Summer (DST) 	AKDT (UTC-8)
Metlakatla is located at 55°7′37″N 131°34′35″W (55.126916, -131.576393)

http://en.wikipedia.org/wiki/Ketchikan
Population (2007) - Total 7,368

http://en.wikipedia.org/wiki/Petersburg,_Alaska
Population (2000) - Total 3,224

http://en.wikipedia.org/wiki/Sitka,_Alaska
Coordinates: 57°10′35″N 135°18′07″W
Population (2005) - Total 8,986

http://en.wikipedia.org/wiki/Wrangell,_Alaska
Population 2308 (2000)

If you believe Wikipedia's Metlakatla entry, they're on Pacific Standard Time (UTC-8) year round; if you believe other sites, they observe DST but are on Alaska Time.

Putting it all together, it looks as if America/Juneau splits in three:

Zone America/Juneau	 15:02:19 -	LMT	1867 Oct 18
			 -8:57:41 -	LMT	1900 Aug 20 12:00
			 -8:00	-	PST	1942
			 -8:00	US	P%sT	1946
			 -8:00	-	PST	1969
			 -8:00	US	P%sT	1980 Apr 27 2:00
			 -9:00	US	Y%sT	1980 Oct 26 2:00	
			 -8:00	US	P%sT	1983 Oct 30 2:00
			 -9:00	US	Y%sT	1983 Nov 30
			 -9:00	US	AK%sT

Zone America/Sitka	 -14:58:47 -	LMT	1867 Oct 18
			 -9:01:13 -	LMT	1900 Aug 20 12:00
			 -8:00	-	PST	1942
			 -8:00	US	P%sT	1946
			 -8:00	-	PST	1969
			 -8:00	US	P%sT	1983 Oct 30 2:00
			 -9:00	US	Y%sT	1983 Nov 30
			 -9:00	US	AK%sT


Zone America/Metlakatla	 15:13:42 -	LMT	1867 Oct 18
			 -8:46:18 -	LMT	1900 Aug 20 12:00
			 -8:00	-	PST	1942
			 -8:00	US	P%sT	1946
			 -8:00	-	PST	1969
			 -8:00	US	P%sT

That last line might need to be replaced by these two:

			 -8:00	US	P%sT	1983 Oct 30 2:00
			 -8:00	US	PST

Oddly, in 1980 Sitka stayed on Pacific Time even though it's west of Juneau which moved to Yukon time; Sitka's southerliness overrode its westerliness.

These changes would affect current time stamps in Metlakatla.

Well?

        --ado