BC — most places west of the Rocky Mountains

YT — entire territory

BC — Creston Valley:

• Town of Creston
• Central Kootenay Electoral Area A (includes Riondel, Wynndel, and all places in between)
• Central Kootenay Electoral Area B (includes Rykerts, Kitchener, Yahk, and Kingsgate)
• Central Kootenay Electoral Area C
• southwestern corner of East Kootenay Electoral Area C (includes Ryan)

BC — northeastern sector of province:

• Northern Rockies Regional Municipality
• Peace River Regional District — excluding Tsay Keh Dene, Fort Ware, and all other parts of the district west of the Muskwa Mountain Ranges

NT — entire territory

NU — western section:

• all parts of Kitikmeot Region
• the part of Qikiqtaaluk Region lying west of 102°W
• the part of Kivalliq Region lying west of 102°W

BC — southeastern sector of province:

• Town of Golden
• Columbia-Shuswap Electoral Area A — excluding the portion occupied by Glacier National Park
• East Kootenay Regional District — excluding the southwestern corner of East Kootenay Electoral Area C

AB — entire province

SK — Lloydminster:

• City of Lloydminster
• subdivision 6 of Saskatchewan School Division 203 (includes Maidstone)
• subdivision 7 of Saskatchewan School Division 203 (includes Marshall and Hillmond)
• subdivision 8 of Saskatchewan School Division 203 (includes Marsden and Neilburg)

SK — most places:

• all places in Saskatchewan — excluding the areas around Lloydminster and Creighton

NU — central section:

• the part of Kivalliq Region lying between 85°W and 102°W — excluding Southampton Island
• the part of Qikiqtaaluk Region Region lying between 85°W and 102°W — excluding Arctic Bay and Eureka

SK — Creighton:

• Saskatchewan School Division 111 (includes Creighton and Denare Beach)
• loosely defined area surrounding Saskatchewan School Division 111 (includes Sturgeon Landing)

MB — entire province

ON — northwestern sector of province:

• all places west of 90°W — excluding areas around Atikokan and Pickle Lake
• area surrounding Big Trout Lake as depicted on the official Ontario road map (includes Kasabonika, Kingfisher Lake, Kitchenuhmaykoosib Aaki [Big Trout Lake], Wawakapewin [Long Dog Lake], Wapekeka [Angling Lake], and Wunnumin Lake)

NU — Eureka

• Eureka Research Station and surrounding area

NU — Southampton Island and adjacent islands:

• Southampton Island (includes Coral Harbour)
• Qikiqtaaluk [White Island]
• Caribou Island

ON — Atikokan:

• Town of Atikokan
• Quetico Provincial Park
• other loosely defined parts of Rainy River District that surround the town of Town of Atikokan

ON — Pickle Lake:

• Pickle Lake Township
• area surrounding Pickle Lake Township as depicted on the official Ontario road map (includes Osnaburgh 63A and Osnaburgh 63B)

NU — eastern section:

• the part of Kivalliq Region region lying east of 85°W — excluding Southampton Island and its adjacent islands
• the part of Qikiqtaaluk Region lying east of 85°W
• Hamlet of Arctic Bay and surrounding area

ON — most places east of 90°W or thereabouts:

• all places east of exactly 90°W — excluding the area around Big Trout Lake
• loosely defined area in the southwestern corner of Thunder Bay District (includes English River, Upsala, and Shebandowan)

QC — most places

• all mainland parts of the province lying west of the Natashquan River — excluding the Listuguj Reserve
• Anticosti Island

NL — loosely defined border area near Schefferville QC

QC — Le Golfe-du-Saint-Laurent Regional County Municipality which is comprised of:

• the former regional county municipality of Basse-Côte-Nord [en:Lower North Shore] (includes Kegaska, Blanc-Sablon, and all communities in between)
• the unorganized territory of Petit-Mécatina†

QC — Îles de la Madeleine [en:Magdalen Islands]

QC — Listuguj Reserve

NB — entire province

PE — entire province

NS — entire province

NL — most parts of Labrador

• all parts of Labrador — excluding southeastern sector, and also excluding border area near Schefferville QC

NL — Island of Newfoundland and adjacent islands

NL — Belle Isle

NL — southeastern sector of Labrador:

• area as depicted on HWY#510 time zone boundary signs (includes Black Tickle, L'Anse-au-Clair, and all communities in between)

†Prior to 2010, Petit-Mécatina belonged to Minganie Regional County Municipality which was given explicit EST/EDT status under the 2006 time act. Given that Petit-Mécatina is no longer part of Minganie, and given that it is entirely east of 63°W, a careful interpretation of 2006 time act will place Petit-Mécatina on permanent Atlantic Standard Time (AST) from 2010 onwards. This may be considered moot because Petit-Mécatina is a vast wilderness with no infrastructure and no inhabitants.

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