Geography · Canada

Eastern Time in Canada

Most of Ontario and Quebec and the eastern part of Nunavut use Eastern Time – EST (UTC−5) in winter, EDT (UTC−4) in summer – on the same dates as the United States. Unlike in the US, each province and territory sets its own clock by law.

Toronto · Ottawa · Montreal
--:-- ET
Iqaluit, Nunavut
--:-- ET
UTC offset
UTC−5 / UTC−4
Next clock change
Second Sunday in March

Which parts of Canada use Eastern Time?

Three jurisdictions. Ontario uses Eastern Time east of the 90th meridian, which takes in Toronto, Ottawa, Sudbury and Thunder Bay. Quebec uses it almost everywhere, from Gatineau to Montreal, Quebec City and the Gaspé. In Nunavut, the communities of Baffin Island, including the capital Iqaluit, keep Eastern Time; the Kivalliq region around Rankin Inlet is on Central Time and the Kitikmeot region on Mountain Time. All three follow the North American daylight saving dates, so their clocks match the live Eastern Time clock for New York.

The edges are where it gets interesting. Around the zone's borders, several places keep a different clock, usually to match the neighbours they trade and travel with:

Eastern Time and its exceptions in Canada (as of November 2026)
AreaExample placesWinterSummertz ID
Ontario east of 90°WToronto, Ottawa, Thunder BayEST, UTC−5EDT, UTC−4America/Toronto
Quebec (most)Montreal, Quebec City, GatineauEST, UTC−5EDT, UTC−4America/Toronto
Nunavut, Baffin IslandIqaluit, Pangnirtung, Pond InletEST, UTC−5EDT, UTC−4America/Iqaluit
Atikokan & Pickle Lake areas, OntarioAtikokanUTC−5UTC−5 (no DST)America/Atikokan
Southampton Island, NunavutCoral HarbourUTC−5UTC−5 (no DST)America/Coral_Harbour
Ontario west of 90°WKenora, Dryden, Fort FrancesUTC−5 (from Nov 2026)UTC−5America/Winnipeg
Magdalen Islands & Listuguj, QuebecCap-aux-MeulesAST, UTC−4ADT, UTC−3America/Halifax
Basse-Côte-Nord, QuebecBlanc-SablonAST, UTC−4UTC−4 (no DST)America/Blanc-Sablon

Atikokan, west of 90°W, has kept UTC−5 all year since at least the 1950s, which equals Central daylight time in summer and Eastern standard time in winter. Quebec's Magdalen Islands and the Mi'gmaq community of Listuguj use Atlantic Time like neighbouring New Brunswick and Prince Edward Island, while the remote Lower North Shore toward Labrador stays on Atlantic Standard Time all year. Nunavut learned the same lesson the hard way: after the territory was created in 1999 it moved every community to a single Central zone that October, Iqaluit returned to Eastern Time in October 2000, and by April 2001 the territory was back to three zones. For the full list of places sharing this offset, see everywhere on UTC−5, and the interactive time zone map shows the zones together.

Why does each Canadian province set its own time?

Because Canada never federalised the clock. In the United States, Congress fixed time zones and daylight saving time in the Standard Time Act of 1918 and the Uniform Time Act of 1966 (15 U.S.C. §§260–267), and the Department of Transportation draws every boundary in 49 CFR Part 71. In Canada, timekeeping has been treated as a provincial and territorial matter: as the National Research Council puts it, daylight saving time is determined by provincial legislation. The result is a patchwork of statutes rather than one federal map:

  • Ontario – the Time Act (R.S.O. 1990, c. T.9) sets standard time at five hours behind Greenwich east of 90°W and six hours behind west of it, adds one hour for daylight saving time, and lets the provincial cabinet vary those rules by regulation.
  • Quebec – the Legal Time Act (CQLR c. T-5.1), passed in 2006, makes Eastern Standard Time the legal time, with Atlantic time east of 63°W and in Listuguj, and daylight time from the second Sunday in March to the first Sunday in November.
  • Nunavut – standard time is fixed under the territory's Interpretation Act, amended in 2007 for the current daylight saving dates.

The dates match the US only because the provinces chose to follow. When the US Energy Policy Act of 2005 extended daylight saving time from 2007, Ontario and Quebec changed their own rules in 2006 so that Toronto and Montreal would not drift out of step with New York.

What changed for time in Canada in 2026?

A wave of provinces stopped changing clocks. British Columbia stayed on UTC−7 after its March 8 spring-forward, Alberta and the Northwest Territories adopted year-round UTC−6, and Manitoba stayed on UTC−5 instead of falling back on November 1, 2026. Ontario followed for its northwest: Ontario Regulation 333/26 keeps the part of the province west of 90°W on UTC−5 from November 1, 2026. Since then Kenora and Winnipeg read the same as Toronto in winter; from March 14, 2027, when Toronto springs forward to EDT, they will be one hour behind it.

Eastern Canada has not moved yet. Ontario's Time Amendment Act, 2020 (S.O. 2020, c. 28), which received Royal Assent on November 30, 2020, would make daylight time permanent across Ontario, but it takes effect only when proclaimed, and its sponsors tied that to Quebec and New York doing the same. As of November 2026 it has not been proclaimed. On October 28, 2026, Quebec's government announced that it intends to make the November 1, 2026 change the province's last and will table a bill; it has not yet chosen between permanent standard time and permanent daylight time. Until a law is passed, Quebec's Legal Time Act still provides for EDT from March.

Devices whose time zone data predates these 2026 decisions can show Winnipeg, Kenora or Vancouver an hour off. Updating the operating system or browser installs the current tz database.

How do you write Eastern Time in French?

Canadian French uses HNE (heure normale de l'Est) for EST and HAE (heure avancée de l'Est) for EDT; Atlantic time becomes HNA and HAA. These abbreviations come from the bilingual Canadian standard CAN/CSA-Z234.4-89. French also writes times on the 24-hour clock with an "h": a Montreal event at 7:30 PM EST is announced as 19 h 30 HNE. The same rule as in English applies – HNE in winter, HAE in summer – and heure de l'Est without a qualifier works when the season is unknown, just like "ET". The guide to ET abbreviations covers the English forms.

Where does Canada's official time come from?

The provinces decide the offset; the National Research Council Canada (NRC) in Ottawa supplies the reference. The NRC maintains Canada's official time from its atomic clocks and distributes it through a web clock, Network Time Protocol servers and a telephone talking clock – the Canadian counterpart of NIST and time.gov in the United States. Eastern Time in Toronto or Iqaluit is simply that UTC reference minus five hours, or minus four during daylight saving time. Compare the Canadian picture with the US one on the states on Eastern Time hub.

Frequently asked questions

Are Toronto and New York always on the same time?

Yes. Ontario uses the same daylight saving dates as the United States, so Toronto and Ottawa show the same time as New York all year. Montreal does too under Quebec's current law.

Are Ottawa and Gatineau in the same time zone?

Yes. Ottawa (Ontario) and Gatineau (Quebec) face each other across the Ottawa River and both use Eastern Time, even though their clocks are set by two different provincial laws.

What time zone is Thunder Bay in?

Eastern Time. Thunder Bay lies at about 89.2°W, just east of the 90th meridian that Ontario's Time Act uses as its dividing line. The Upsala area west of the city also keeps Eastern Time in practice, although it lies west of 90°W.

When do clocks change next in Eastern Canada?

Sunday, March 14, 2027 at 2:00 AM local time, when clocks spring forward to EDT in Ontario east of 90°W and in Nunavut's Eastern Time communities. Quebec's law provides for the same change unless a new law takes effect first.

Which Canadian places stay on UTC−5 all year?

Atikokan and Pickle Lake in Ontario and Coral Harbour on Southampton Island, Nunavut, have long kept UTC−5 without daylight saving time. Since late 2026 Manitoba and northwestern Ontario west of 90°W also stay on UTC−5 year-round.

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