Canadian Time Zone History
America/St_Johns  (NL)
-3:30:52 -    LMT  1884
-3:30:52 StJ  N%sT 1935 Mar 30
-3:30 StJohns N%sT 1942 May 11
-3:30 Canada  N%sT 1946
-3:30 StJohns N%sT 2011 Nov

America/Goose_Bay (NL)
-4:01:40 -    LMT  1884 # Happy Valley
-3:30:52 -    NST  1935 Mar 30
-3:30 -       NST  1936
-3:30 StJohns N%sT 1942 May 11
-3:30 Canada  N%sT 1946
-3:30 StJohns N%sT 1966 Mar 15 2:00

America/Glace_Bay (No DST 54-72)
-3:59:48 -    LMT  1902 Jun 15
-4:00 Canada  A%sT 1953
-4:00 Halifax A%sT 1954
-4:00 -       AST  1972
-4:00 Halifax A%sT 1974
-4:00 Canada  A%sT

America/Halifax   (NS, PEI)
-4:14:24 -    LMT  1902 Jun 15
-4:00 Halifax A%sT 1942 Feb  9 2:00s
-4:00 Canada  A%sT 1946
-4:00 Halifax A%sT 1974
-4:00 Canada  A%sT

America/Moncton   (NB)
-4:19:08 -    LMT  1883 Dec  9
-5:00 -       EST  1902 Jun 15
-4:00 Canada  A%sT 1933
-4:00 Moncton A%sT 1942
-4:00 Canada  A%sT 1946
-4:00 Moncton A%sT 1973
-4:00 Canada  A%sT 1993
-4:00 Moncton A%sT 2007
-4:00 Canada  A%sT

America/Montreal  (QC)
# => America/Toronto

America/Toronto   (ON, QC)
-5:17:32 -    LMT  1895
-5:00 Canada  E%sT 1919
-5:00 Toronto E%sT 1942 Feb  9 2:00s
-5:00 Canada  E%sT 1946
-5:00 Toronto E%sT 1974
-5:00 Canada  E%sT

America/Winnipeg  (MB, west ON)
-6:28:36 -    LMT  1887 Jul 16
-6:00 Winn    C%sT 2006
-6:00 Canada  C%sT 2026 Nov  1 2:00

America/Iqaluit       (NT>NU)
                   1942 Aug
-5:00 NT_YK   E%sT 1999 Oct 31 2:00

America/Resolute      (NT>NU)
                   1947 Aug 31
-6:00 NT_YK   C%sT 2000 Oct 29 2:00

America/Rankin_Inlet  (NT>NU)
                   1957
-6:00 NT_YK   C%sT 2000 Oct 29 2:00

America/Cambridge_Bay (NT>NU)
                   1920
-7:00 NT_YK   M%sT 1999 Oct 31 2:00

See below for additional cities 		Original Canadian Time Zones generally based on "mean solar time".
Exact boundaries not available. Time shown is based on reference cities within each zone.
Creston BC (marked -7 above) follows America/Phoenix (UTC-07 no DST)
Southampton Island NU and Atikokan ON follow America/Panama (UTC-05 no DST)
Western Labrador follows America/Halifax (UTC-04 w/DST)
Eastern Quebec follows America/Puerto_Rico (UTC-04 no DST)
1867 British North America Act establishes Dominion of Canada allowing Canada to manage internal affairs
1870-1898 Expansion of Canada coast to coast and north to the Arctic Ocean
1931 Statute of Westminster established legislative independence relinquishing British veto power over legislation
1949 Newfoundland (and Labrador) become Canada's 10th province
Net of changes prior to 1960
Exact boundaries not available. Time shown is based on reference cities within each zone.
1960Saskatchewan moves from MST/MDT (UTC-07 / UTC-06) to CST (UTC-06)
America/Regina (SK)
-6:58:36 -   LMT  1905 Sep
-7:00 Regina M%sT 1960 Apr lastSun 2:00
-6:00 -      CST
# PERMANENT DST -06

America/Swift_Current (west SK)
-7:11:20 -   LMT  1905 Sep
-7:00 Canada M%sT 1946 Apr lastSun 2:00
-7:00 Regina M%sT 1950
-7:00 Swift  M%sT 1972 Apr lastSun 2:00
# Split from America/Regina in 1950
# Nap estimated
1966Whitehorse Yukon moves from YST/YDT (UTC-09 / UTC-08) to PST (UTC-08)
Labrador observes AST/ADT (UTC-04 / UTC-03) instead of Newfoundland Time
America/Whitehorse (YT)
-9:00:12 -    LMT  1900 Aug 20
-9:00 NT_YK   Y%sT 1965
-9:00 Yukon   Y%sT 1966 Feb 27 0:00
-8:00 -       PST  1980
# PERMANENT DST -08

America/Dawson (west YT)
-9:17:40 -    LMT  1900 Aug 20
-9:00 NT_YK   Y%sT 1965
-9:00 Yukon   Y%sT 1973 Oct 28 0:00
# Split from America/Whitehorse in 1966
# Nap estimated

America/St_Johns
-3:30 StJohns N%sT 2011 Nov
-3:30 Canada  N%sT

America/Goose_Bay
-3:30 StJohns N%sT 1966 Mar 15 2:00
-4:00 StJohns A%sT 2011 Nov
-4:00 Canada  A%sT
1969Alaska adopts DST
America/Adak
-11:00 -     NST   1967 Apr
-11:00 -     BST   1969
-11:00 US    B%sT  1983 Oct 30 2:00

America/Nome
-11:00 -     NST   1967 Apr
-11:00 -     BST   1969
-11:00 US    B%sT  1983 Oct 30 2:00

America/Anchorage
-10:00 -     AHST  1969
-10:00 US    AH%sT 1983 Oct 30 2:00

America/Yakutat
-9:00  -     YST   1969
-9:00  US    Y%sT  1983 Nov 30

America/Sitka
-8:00  -     PST   1969
-8:00  US    P%sT  1983 Oct 30 2:00

America/Juneau
-8:00  -     PST   1969
-8:00  US    P%sT  1980 Apr 27 2:00

America/Metlakata
-8:00  -     PST   1969
-8:00  US    P%sT  1983 Oct 30 2:00
1972Dawson Creek BC moves from PST/PDT (UTC-08 / UTC-07) to MST (UTC-07)
America/Dawson_Creek
-8:00:56 -   LMT  1884
-8:00 Canada P%sT 1947
-8:00 Vanc   P%sT 1972 Aug 30 2:00
-7:00 -      MST
# Split from America/Vancouver in 1972
# PERMANENT DST -07

America/Regina (SK)
-6:00 -      CST
# PERMANENT DST -06 (1960)

America/Swift_Current
-7:00 Swift  M%sT 1972 Apr lastSun 2:00
-6:00 -      CST
# PERMANENT DST -06
1973Western Yukon moves from YST/YDT (UTC-09 / UTC-08) to PST (UTC-08)
America/Dawson (west YT)
-9:00 Yukon  Y%sT 1973 Oct 28 0:00
-8:00 -      PST  1980
# PERMANENT DST -08

America/Whitehorse (YT)
-8:00 -      PST  1980
# PERMANENT DST -08 (1966)
1979Western Northwest Territories moves from PST/PDT to MST/MDT
America/Inuvik (NT)
                  1953 # Founded
-8:00 NT_YK  P%sT 1979 Apr lastSun 2:00
-7:00 NT_YK  M%sT 1980
-7:00 Canada M%sT 2026 Aug 21

America/Yellowknife (NT)
                  1935 # Founded?
-7:00 NT_YK  M%sT 1980
-7:00 Canada M%sT 2026 Aug 21
# => America/Edmonton
1980
 		Yukon moves from PST (UTC-08) to PST/PDT (UTC-08 / UTC-07)
1982 Canada Act allows Canada to amend constitution without approval of British Parliament
1983 - Alaska combines time zones
America/Dawson
-8:00 -      PST   1980
-8:00 Canada P%sT  2020 Nov  1

America/Whitehorse
-8:00 -      PST   1980
-8:00 Canada P%sT  2020 Nov  1



America/Adak
-11:00 US    B%sT  1983 Oct 30 2:00
-10:00 US    AH%sT 1983 Nov 30
-10:00 US    H%sT


America/Nome
-11:00 US    B%sT  1983 Oct 30 2:00
America/Anchorage
-10:00 US    AH%sT 1983 Oct 30 2:00
America/Yakutat
-9:00  US    Y%sT  1983 Nov 30
America/Sitka
-8:00  US    P%sT  1983 Oct 30 2:00
America/Juneau
-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

# Alaska Standard Time (AKST / AKDT)
-9:00  US    Y%sT  1983 Nov 30
-9:00  US    AK%sT
1999Nunavut separated from Northwest Territories and attempted a unified time zone
October 31, 1999 all of Nunavut moved to CST/CDT (UTC-06 / UTC-05).
October 29, 2000 Nunavut moved to EST (UTC-05) with DST only in the Eastern areas.
The Cambridge Bay area changed to CST (UTC-06) one week later.
The previous time zones were restored April 1, 2001.
Southampton Island remained EST (UTC-05) through all transitions.
-7:00 NT_YK  M%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 -      EST  2000 Nov  5 0:00
-6:00 -      CST  2001 Apr  1 3:00
-7:00 Canada M%sT
-6:00 NT_YK  C%sT 2000 Oct 29 2:00
-5:00 -      EST
                  2001 Apr  1 3:00
-6:00 Canada C%sT
 -5:00 NT_YK  E%sT 1999 Oct 31 2:00
-6:00 Canada C%sT 2000 Oct 29 2:00
-5:00 Canada E%sT
2006Resolute observes one winter of DST.
America/Resolute
                  1947 Aug 31
-6:00 NT_YK  C%sT 2000 Oct 29 2:00
-5:00 -      EST  2001 Apr  1 3:00
-6:00 Canada C%sT 2006 Oct 29 2:00
-5:00 -      EST  2007 Mar 11 3:00
-6:00 Canada C%sT
# Split from America/Rankin_Inlet
2015Fort Nelson BC moves from PST/PDT (UTC-08 / UTC-07) to MST (UTC-07)
America/Fort_Nelson
-8:10:47 -   LMT  1884
-8:00 Vanc   P%sT 1946
-8:00 -      PST  1947
-8:00 Vanc   P%sT 1987
-8:00 Canada P%sT 2015 Mar  8 2:00
-7:00 -      MST
# Split from America/Vancouver in 2015
# PERMANENT DST -07

America/Dawson_Creek
-7:00 -      MST
# Split from America/Vancouver in 1972
# PERMANENT DST -07
2020Yukon moves from PST/PDT (UTC-08 / UTC-07) to MST (UTC-07)
America/Dawson
-8:00 Canada P%sT 2020 Nov  1
-7:00 -      MST
# PERMANENT DST -07

America/Whitehorse
-8:00 Canada P%sT 2020 Nov  1
-7:00 -      MST
# PERMANENT DST -07
Yukon - Proclaimed permanent DST (UTC-07) called "Yukon Standard Time" effective November 1st, 2020.
(Public Engagement: What We Heard - Regulation: O.I.C. 2020/125 [Sep 25, 2020])
** IANA tzdata 2020a - April 23rd / tzdata 2020b - October 6th
2026British Columbia moves from PST/PDT (UTC-08 / UTC-07) to MST (UTC-07)
Alberta, Regional District of East Kootenay BC, Golden BC and Northwest Territories
move from MST/MDT (UTC-07 / UTC-06) to CST (UTC-06)
Manitoba moves from CST/CDT (UTC-06 / UTC-05) to EST (UTC-05)
America/Vancouver (BC)
-8:12:28 -   LMT  1884
-8:00 Vanc   P%sT 1987
-8:00 Canada P%sT 2026 Mar  9
-8:00 Canada PDT  2026 Nov  1 2:00
-7:00 -      MST
# PERMANENT DST -07

America/Edmonton  (AB)
-7:33:52 -   LMT  1906 Sep
-7:00 Edm    M%sT 1987
-7:00 Canada M%sT 2026 Jun 18
-7:00 Canada MDT  2026 Nov  1 2:00
-6:00 -      CST
# PERMANENT DST -06

America/Inuvik    (NT)
-7:00 Canada M%sT 2026 Aug 21
-7:00 Canada MDT  2026 Nov  1 2:00
-6:00 -      CST
# PERMANENT DST -06

America/Yellowknife (NT)
-7:00 Canada M%sT 2026 Aug 21
-7:00 Canada MDT  2026 Nov  1 2:00
-6:00 -      CST
# PERMANENT DST -06
# => America/Edmonton

America/Winnipeg  (MB)
-6:00 Canada C%sT 2026 Oct 31
-6:00 Canada CDT  2026 Nov  1 2:00
-5:00 -      EST
# PERMANENT DST -05
  1 - British Columbia (Vancouver)
2 - Alberta (Calgary / Edmonton)
3 - Regional District of East Kootenay
5 - Golden BC (CSRD A) 		4 - Northwest Territories (Yellowknife)


6 - Manitoba (Winnipeg / NW Ontario)
Details of 2026 Changes
[close][open]

British Columbia - Proclaimed permanent DST (UTC-07) called "Pacific Time" effective March 9th, 2026.
(Legislation: Bill 40 - Interpretation Amendment Act, 2019 - Assent: November 28, 2019 - Proclamation: B.C. Regulation 20/2026)
** IANA tzdata 2026b - April 22nd

Alberta - Legislation passed and received royal assent May 14th, 2026, for permanent DST (UTC-06) effective June 18, 2026.
(Legislation: Bill 31 - Red Tape Reduction Statutes Amendment Act, 2026 [PDF pg.17] - Proclamation: 204/2026 effective; 206/2026 "Alberta Time")
** IANA tzdata 2026c - July 8th

RDEK BC - Will follow "Mountain Daylight Time" permanent DST (UTC-06) effective August 14, 2026.
Announced as UTC-07 March 13th then withdrawn pending regional survey. RDEK historically followed Alberta time (MST/MDT).
(Regional Survey [Open July 3rd-August 3rd]; Results: 89% no DST / 66% "MDT" (UTC-06) - UTC-06 confirmed at RDEK Board Meeting.)

Northwest Territories - Regulation for permanent DST (UTC-06) called "Northwest Territories Time" effective August 21, 2026.
Legislation passed and received royal assent March 31, 2021, for a public engagement to select a time zone.
(Legislation: Bill 13 - An Act to Amend the Interpretation Act and What We Heard Report - Regulation: R-090-2026)
** IANA tzdata 2026d - September 11th

Golden BC and Columbia Shuswap Regional District (CSRD) Electoral District A - Permanent DST (UTC-06) effective Sept 22, 2026
CSRD A surrounds Golden BC and is adjacent to RDEK on the border of BC with Alberta and historically followed Alberta time (MST/MDT).
(Regional Survey [Coordinated with RDEK.] Results: 55% of Golden + CSRD A support "MDT" (UTC-06).)
 * Golden chose Permanent "MST" (UTC-07) September 1st (4-2 vote). Press Release
 * Golden reconsidered and chose Permanent "MDT" (aka CST or UTC-06) September 22nd (unanimous vote). Press Release
 * CSRD board met September 10th and delayed a decision until October 15th. CSRD chose UTC-06 for electoral area A.

Manitoba - Announced and proclaimed permanent DST (UTC-05) called "Manitoba Time (MBT)" effective October 31st, 2026.
(Legislation: The Official Time Amendment Act, SM 2023 - Assent: May 30, 2023 - Regulation: 221/2026 and Proclamation September 23, 2026)
(Press Release: Manitobans invited to share views on seasonal time change [Public engagement May 20th-Aug 31st, 2026] - 92% No DST. 58% EDT / 34% EST)
(Press Release: Manitoba Will Move to Permanent Daylight Saving Time Sept 17th; Signing: YouTube Video Sept 25th)
** IANA tzdata 2026e - September 29th

Northwestern Ontario - Historically followed the same time as Manitoba. Permanent DST (UTC-05) effective November 1st, 2026.
Legal framework existed for Ontario to issue a regulation changing Northwestern Ontario to UTC-05 year-round, without affecting the rest of Ontario.
The regional consensus was to follow Manitoba Time, with over 90% of residents responding would like to end DST and prefer UTC-05.
('NWO News Watch Oct 1; London Free Press Oct 5; Ontario AG News Release Oct 13) - Regulation O. 333/26 issued Oct 19.
** IANA tzdata - no update needed

[NW Ontario Map][NW Ontario Map]

Manitoba's change left the northwest Ontario area to either immediately change to Permanent CDT (UTC-05) or to allow the area to be out of sync with Manitoba in winter.

Without a change there would be a situation where a large area of UTC-06 is between two areas of UTC-05 in winter months.

The map to the right shows the summer and winter time zones in Canada and the United States as of October 2026, prior to Ontario's regulation to follow UTC-05 year-round.

2027 ?Nunavut ?
America/Cambridge_Bay
-7:00 Canada M%sT 2027 Mar 14 2:00 ??
-7:00 Canada M%sT 2027 Nov  7 2:00 ??
-6:00 -      CST
# PERMANENT DST -06

America/Rankin_Inlet
-6:00 Canada C%sT 2027 Mar 14 2:00 ??
-6:00 Canada C%sT 2027 Nov  7 2:00 ??
-5:00 -      EST
# PERMANENT DST -05

America/Resolute
-6:00 Canada C%sT 2027 Mar 14 2:00 ??
-6:00 Canada C%sT 2027 Nov  7 2:00 ??
-5:00 -      EST
# PERMANENT DST -05

America/Iqaluit
-5:00 Canada E%sT 2027 Mar 14 2:00 ??
-5:00 Canada E%sT 2027 Nov  7 2:00 ??
-4:00 -      AST
# PERMANENT DST -05

Nunavut
Cambridge Bay observes MST (-7) with DST (-6), Rankin Inlet on Hudson Bay and Resolute on the Arctic Ocean observe CST (-6) with DST (-5) and the capital city of Iqaluit and eastern Nunavut observe EST (-5) with DST (-4). Southampton Island observes EST with no DST (-5).

On April 20th, 2026, Alberta and Northwest Territories announced their intent to change time zones. Following those announcements, Nunavut MLA Fred Pederson expressed the desire for Cambridge Bay (Kitikmeot Region) to follow Alberta and Northwest Territories and observe Permanent MDT (UTC-06).
Without a change Cambridge Bay will be the only area in Canada to observe MST with DST.
Cambridge Bay will be on "Yukon Time" for four months in the winter (an hour behind NWT) and "Northwest Territories Time" for eight months in the summer.

As of May 28th, 2026, Nunavut was exploring the possibility of ending seasonal time changes across all of Nunavut. (Nunatsiaq News)
The spring legislative session ran May 21st through June 11th 2026. Alberta finalized their change June 18th. NWT finalized their change August 21st.

On September 23rd, 2026, Manitoba proclaimed Permanent DST (UTC-05). Rankin Inlet (Kivalliq Region) is north of Manitoba.
As of Oct 7, 2026, both Kitikmeot and Kivalliq regions desire to follow their respective southern neighbors. (CBC News)
Without a change Rankin Inlet / Resolute will be the only areas in Canada to observe CST with DST.

The area south of eastern Nunavut is Nunavik in Quebec. Nunavik's Inuit government announced Permanent EDT (UTC-04) in November 2025 but has not finalized the transition. As with Nunavut, Nunavik is primarily Inuit land.

The fall legislative sitting is October 22nd-November 5th 2026. The legislature will not sit again until spring 2027.

Nunavik Quebec
On October 30th, 2025, Makivvik said the region would stay on permanent daylight saving time (UTC-04) starting in 2026. (Source: CBC News)
On October 14th, 2026, the planned change was been postponed with a new target date of November 2026. (Source: Press Release)
As part of the Quebec province the provincial government officially controls the time zone in Nunavit, however permanent DST may become locally observed.
Makivvik is the legal representative for Inuit in Nunavik.
[close map][open map]

Nunavik is expected to join eastern Ontario in UTC-04 year round, The region will be one hour ahead of Montreal in winter and remain one hour behind Labrador in summer.

Future Changes

Ontario - The "Time Amendment Act, 2020" provides for permanent DST (UTC-05 west of 90 W longitude, UTC-04 east of 90 W longitude).
Effective when coordinated with Quebec and New York State. Current law allows the Lieutenant Governor to adjust time zones by regulation.
(Legislation: Time Act (with Amendment) - Ontario e-Laws and Bill 214 - Legislative Assembly of Ontario; Change awaiting proclamation)

Quebec - The "Legal Time Act" has not been amended to change to permanent DST.
There is no legislation pending in New Brunswick, Nova Scotia, Prince Edward Island or Newfoundland and Labrador.
American Daylight Time HOME