Time in Canada
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Time in Canada
Time zones in Canada
Standard DST Time zone
GMT-03:30 GMT-02:30 Newfoundland
GMT-04:00 GMT-03:00 Atlantic
GMT-04:00 (year round) Atlantic
GMT-05:00 GMT-04:00 Eastern
GMT-05:00 (year round) Eastern
GMT-06:00 GMT-05:00 Central
GMT-06:00 (year round) Central
GMT-07:00 GMT-06:00 Mountain
GMT-07:00 (year round) Mountain
GMT-08:00 GMT-07:00 Pacific

Canada is divided into six time zones, based on proposals by Scottish Canadian railway engineer Sandford Fleming, who pioneered the use of the 24-hour clock, the world's time zone system, and a standard prime meridian.[1] Most of Canada operates on standard time from the first Sunday in November to the second Sunday in March and daylight saving time the rest of the year.[2]

Official time

National Research Council laboratories in Ottawa

The National Research Council (NRC) maintains Canada's official time through the use of atomic clocks.[3] The official time is specified in legislation passed by the individual provinces. In Quebec it is based on coordinated universal time.[4] The other provinces use mean solar time.[5][6][7][8][9][10][11][12][13][14] The NRC provides both coordinated universal time and mean solar time in its signals.[15] It makes time servers available for direct synchronization with computers. The Canadian Broadcasting Corporation has aired a daily time signal, the National Research Council Time Signal, since November 5, 1939.[16]

Time notation

Canadian National timetable from 1975 using the 24-hour clock

The Government of Canada recommends use of the 24-hour clock (e.g. 05:06), which is widely used in contexts such as transportation schedules, parking meters, and data transmission.[17] Speakers of Canadian French predominantly use this system, but most users of Canadian English use the 12-hour clock in everyday speech (e.g. 5:06 a.m.), even when reading from a 24-hour display, similar to the use of the 24-hour clock in the United Kingdom.

Zones

Pacific Time Zone

Pacific Standard Time (PST) GMT-08:00 and Pacific Daylight Time (PDT) GMT-07:00:

Pacific Daylight Time (PDT) GMT-07:00 year-round:

  • Yukon

Mountain Time Zone

Mountain Standard Time (MST) GMT-07:00 and Mountain Daylight Time (MDT) GMT-06:00:

Mountain Standard Time (MST) GMT-07:00 year-round:

Central Time Zone

Central Standard Time (CST) GMT-06:00 and Central Daylight Time CDT GMT-05:00:

Central Standard Time (CST) GMT-06:00 year-round:

  • Saskatchewan (most of the province) (see Lloydminster, and Creighton, above)

Eastern Time Zone

Eastern Standard Time (EST) GMT-05:00 and Eastern Daylight Time (EDT) GMT-04:00:

  • Nunavut
  • Ontario
    • east of 90° West (except the Big Trout Lake area), plus
    • west of 90° West: Shebandowan and Upsala areas
  • Quebec (most of province)
    • Areas of Labrador adjacent to Schefferville (in Quebec but very close to the Labrador border) use EST and DST unofficially.

Eastern Standard Time (EST) GMT-05:00 year-round:

Atlantic Time Zone

Atlantic Standard Time (AST) GMT-04:00 and Atlantic Daylight Time (ADT) GMT-03:00:

Atlantic Standard Time (AST) UTC-04:00 year-round:

Newfoundland Time Zone

Newfoundland Standard Time (NST) GMT-03:30 and Newfoundland Daylight Time (NDT) GMT-02:30:

Former time zones

  • The Yukon Time Zone (GMT-09:00) covered Yukon until 1975. In 1983, the zone (then covering only a small portion of Alaska) was restructured to cover most of Alaska and renamed the Alaska Time Zone.
  • In 1988, Newfoundland used "double daylight saving time" from April 3 until October 30, meaning that the time was set ahead by 2 hours.[20] All of Newfoundland and southern Labrador, which uses GMT-03:30 as its standard time zone, used GMT-01:30.[21] This only happened in 1988 and the province now only adjusts its time by one hour for daylight saving time.

Daylight saving time

Four Canadian cities, by local ordinance, used daylight saving time in 1916. Brandon, Manitoba,adopted it on April 17. It was followed by Winnipeg on April 23, Halifax on April 30, and Hamilton, Ontario, on June 4.[22]Port Arthur, Ontario, was the first place in the world to introduce it, on July 1, 1908.

Daylight saving time is currently observed in all ten provinces and three territories but with several exceptions in several provinces and Nunavut, including most of Saskatchewan, which despite geographically being in the Mountain Time Zone observes year-round CST. Under the Constitution of Canada, laws related to timekeeping are a purely provincial matter. In practice, since the late 1960s DST across Canada has been closely or completely synchronized with its observance in the United States to promote consistent economic and social interaction. When the United States extended DST in 1987 to the first Sunday in April, all DST-observing Canadian provinces followed suit to mimic the change.

In 2019, the legislature of British Columbia began the process of eliminating the practice of observing daylight saving time in the province. On October 31, 2019, the government introduced Bill 40 in the legislature, which would define "Pacific Time" as "7 hours behind Coordinated Universal Time (UTC)".[23] In a press release, the provincial government stated an intention to maintain alignment of clock time with Washington, Oregon, California, and Yukon.[24] The move follows a consultation earlier in 2019, in which the province received over 223,000 responses, 93% of which said they would prefer year-round DST as compared to the status quo of changing the clocks twice a year.[25][26][27] The premier of British Columbia discussed the issue with Yukon premier Sandy Silver, who said in October that he needs more consultation with Yukon stakeholders, and with Alberta and Alaska.[28]

The latest United States change (Energy Policy Act of 2005), adding parts of March and November starting in 2007, was adopted by the various provinces and territories on the following dates:

  • Ontario,[29] Manitoba[30] - October 20, 2005
  • Quebec - December 5, 2005[31]
  • Prince Edward Island - December 6, 2005[32]
  • New Brunswick - December 23, 2005[33]
  • Alberta - February 2, 2006[34]
  • Northwest Territories - March 4, 2006[35]
  • British Columbia - March 31, 2006[36]
  • Nova Scotia - April 25, 2006[37]
  • Yukon - July 14, 2006[38]
  • Newfoundland and Labrador - November 20, 2006, but officially announced on January 18, 2007[39]
  • Nunavut - February 19, 2007[40]
  • Saskatchewan - no official action taken, as almost all of the province does not change their clocks to summer time (they remain on CST all year round). However, the few places in the province that do observe daylight saving (Lloydminster and the surrounding area, which straddles the Alberta border and observes Alberta's Mountain Time and Creighton, which observes daylight saving on an unofficial basis due to its proximity to the border with Manitoba) follow the aforementioned March-November schedule just like the rest of the country.

IANA time zone database

Data for Canada from zone.tab of the IANA time zone database. Columns marked with * are the columns from zone.tab itself.

C.c.* Coordinates* TZ* Comments* UTC offset UTC offset DST Notes
CA +4734-05243 America/St_Johns Newfoundland Time, including SE Labrador -03:30 -02:30
CA +4439-06336 America/Halifax Atlantic Time - Nova Scotia (most places), PEI -04:00 -03:00 Plus Îles-de-la-Madeleine and Listuguj Mi?gmaq First Nation in Quebec.[41]
CA +4612-05957 America/Glace_Bay Atlantic Time - Nova Scotia - places that did not observe DST 1966-1971 -04:00 -03:00 Likely includes all of Cape Breton Island.[42]
CA +4606-06447 America/Moncton Atlantic Time - New Brunswick -04:00 -03:00 Like America/Halifax, except DST time change happens at midnight rather than 2:00 a.m.
CA +5320-06025 America/Goose_Bay Atlantic Time - Labrador - most locations -04:00 -03:00 Places that used Newfoundland Time until 1966.
CA +5125-05707 America/Blanc-Sablon Atlantic Standard Time - Quebec - Lower North Shore -04:00 -04:00 East of 63rd meridian west.[41]
CA +4531-07334 America/Montreal Eastern Time - Quebec - most locations -05:00 -04:00 Redirects to America/Toronto.
CA +4339-07923 America/Toronto Eastern Time - Ontario & Quebec - most locations -05:00 -04:00 Legally, its western border is 90th meridian west, but there are many de facto exceptions.
CA +4901-08816 America/Nipigon Eastern Time - Ontario & Quebec - places that did not observe DST 1967-1973 -05:00 -04:00 Places using Eastern time that did not observe DST 1967-1973.
CA +4823-08915 America/Thunder_Bay Eastern Time - Thunder Bay, Ontario -05:00 -04:00 Places in Eastern Time that skipped DST in 1973.
CA +6344-06828 America/Iqaluit Eastern Time - east Nunavut - most locations -05:00 -04:00
CA +6608-06544 America/Pangnirtung Eastern Time - Pangnirtung, Nunavut -05:00 -04:00 Places that switched from Atlantic Time to Eastern Time in 1995.
CA +744144-0944945 America/Resolute Central Time - Resolute, Nunavut -06:00 -05:00 Places in Central Time that skipped DST in 2007.
CA +484531-0913718 America/Atikokan Eastern Standard Time - Atikokan, Ontario and Southampton I, Nunavut -05:00 -05:00 Legally CST/CDT, but in practice observes EST year-round.
CA +624900-0920459 America/Rankin_Inlet Central Time - central Nunavut -06:00 -05:00
CA +4953-09709 America/Winnipeg Central Time - Manitoba & west Ontario -06:00 -05:00 Includes Big Trout Lake and Denare Beach, though by law they should be in America/Toronto and America/Regina, respectively.
CA +4843-09434 America/Rainy_River Central Time - Rainy River & Fort Frances, Ontario -06:00 -05:00 Places using Central time that did not observe DST 1967-1973.
CA +5024-10439 America/Regina Central Standard Time - Saskatchewan - most locations -06:00 -06:00
CA +5017-10750 America/Swift_Current Central Standard Time - Saskatchewan - midwest -06:00 -06:00 Western Saskatchewan towns that used Mountain Time until 1972.
CA +5333-11328 America/Edmonton Mountain Time - Alberta, east British Columbia & west Saskatchewan -07:00 -06:00
CA +690650-1050310 America/Cambridge_Bay Mountain Time - west Nunavut -07:00 -06:00
CA +6227-11421 America/Yellowknife Mountain Time - central Northwest Territories -07:00 -06:00 East of 120th meridian west.[43]
CA +682059-1334300 America/Inuvik Mountain Time - west Northwest Territories -07:00 -06:00 West of 120th meridian west.[43]
CA +4906-11631 America/Creston Mountain Standard Time - Creston, British Columbia -07:00 -07:00 Places in Pacific Time that have not used DST since the database cuttoff date (1970).
CA +5946-12014 America/Dawson_Creek Mountain Standard Time - Dawson Creek & Fort Saint John, British Columbia -07:00 -07:00 Places in Pacific Time that stopped using DST in 1973.
CA +4916-12307 America/Vancouver Pacific Time - west British Columbia -08:00 -07:00
CA +6043-13503 America/Whitehorse Pacific Time - south Yukon -08:00 -07:00 East of 138th meridian west.[44]
CA +6404-13925 America/Dawson Pacific Time - north Yukon -08:00 -07:00 West of 138th meridian west.[44]

See also

Notes

  1. ^ Prairie Creek Airport, operated by Canadian Zinc, located in southwest NWT, is shown as observing PST/PDT. North of Sixty Fishing Camps (Obre Lake/North of Sixty Airport) and Kasba Lake Lodge (Kasba Lake Airport) are shown as operating on CST/CDT.[2]

References

  1. ^ Creet, Mario (1990). "Sandford Fleming and Universal Time". Scientia Canadensis: Canadian Journal of the History of Science, Technology and Medicine. 14 (1-2): 66-89. doi:10.7202/800302ar.
  2. ^ a b Canada Flight Supplement. Effective 0901Z 16 July 2020 to 0901Z 10 September 2020.
  3. ^ "NRC time services". National Research Council. Archived from the original on 20 July 2018. Retrieved 2018.
  4. ^ National Assembly (1 January 2007). "Legal Time Act 2006". Retrieved 2020.
  5. ^ Minister of Justice (26 February 2015). "Interpretation Act R.S.C., 1985" (PDF). Retrieved 2020. This Act, R.S.C. 1985, c. I-21, section 35(1) refers to 'standard time' for the several provinces, defining each in relation to 'Greenwich time', but does not use the expression 'Greenwich mean time'.
  6. ^ Alberta Queen's Printer (1 January 2007). "Daylight Saving Time Act, RSA 2000". Retrieved 2020.
  7. ^ Queen's Printer (5 April 2016). "Interpretation Act, RSBC 1996". Retrieved 2020.
  8. ^ Manitoba (1 February 1988). "The Official Time Act". Retrieved 2020.
  9. ^ Queen's Printer for New Brunswick (1 September 2011). "Time Definition Act 2011" (PDF). Retrieved 2020.
  10. ^ Queen's Printer, St John's (2012). "Standard Time Act RSNL 1990". Retrieved 2020. By §2(1) "Time in the province shall be reckoned as 3 1/2 hours later [sic] than Greenwich mean solar time."
  11. ^ Office of the Legislative Counsel (22 September 1998). "Time Definition Act". Retrieved 2020.
  12. ^ Queen's Printer for Ontario (31 December 1990). "Time Act, R.S.O. 1990". Retrieved 2020.
  13. ^ Legislative Counsel Office (2 December 2015). "Interpretation Act 1988" (PDF). Retrieved 2020.
  14. ^ The Queen's Printer (26 February 1978). "The Time Act 1978" (PDF). Retrieved 2020.
  15. ^ National Research Council (28 July 2020). "DUT1 announcement". Retrieved 2020.
  16. ^ Bartlett, Geoff (5 November 2014). "'The beginning of the long dash' indicates 75 years of official time on CBC". CBC News. Archived from the original on 5 November 2019. Retrieved 2018.
  17. ^ Collishaw, Barbara (2002). "FAQs on Writing the Time of Day". Terminology Update. 35 (3): 11. Archived from the original on 2018-07-14. Retrieved .
  18. ^ Buckle, Anne (21 September 2015). "New Time Zone in Fort Nelson". Time and Date. Archived from the original on 2016-03-04. Retrieved 2020.
  19. ^ a b Legal time in Québec Archived 2011-12-11 at the Wayback Machine, Ministry of Justice of Quebec, April 20, 2015.
  20. ^ Benesh, Peter (1988-06-21). "Daylight Almost Until Midnight: Newfoundland Tries out Double Daylight-Saving Time". Orlando Sentinel. Retrieved .
  21. ^ Order re: Newfoundland Double Daylight Savings Time, 1988. O.C. 1404/87. Newfoundland Gazette, 1988-02-19, page 67.
  22. ^ Doris Chase Doane, Time Changes in Canada and Mexico, 2nd edition, 1972.
  23. ^ "Bill 40 - 2019: Interpretation Amendment Act, 2019". Legislative Assembly of British Columbia. 2019. Archived from the original on 2019-11-03. Retrieved .
  24. ^ "Interpretation amendment act sets stage for year-round daylight time" (PDF) (Press release). British Columbia Office of the Premier / Ministry of Attorney General. 2019-10-31. Archived (PDF) from the original on 2019-11-03. Retrieved .
  25. ^ Chan, Cheryl (2019-09-11). "B.C. survey shows overwhelming support for permanent Daylight Saving Time". Vancouver Sun. Archived from the original on 2019-11-03. Retrieved .
  26. ^ "Daylight Saving Time Public Consultation: Final Report" (PDF). 2019. Archived (PDF) from the original on 2019-09-11. Retrieved .
  27. ^ "B.C.'s daylight saving survey gets more public engagement than marijuana regulation". CBC News. 2019-07-05. Archived from the original on 2019-07-07. Retrieved .
  28. ^ Plonka, Gabrielle (2019-10-01). "B.C. premier meets with Silver, grand chief". Whitehorse Daily Star. Archived from the original on 2019-11-02. Retrieved .
  29. ^ "Time Act". Archived from the original on 2013-12-02. Retrieved .
  30. ^ Province Introduces Legislation that Would Extend Daylight Saving Time in Manitoba Archived 2016-07-23 at the Wayback Machine (The Official Time Amendment Act Archived 2006-05-28 at the Wayback Machine,The Official Time Act Archived 2005-11-09 at the Wayback Machine)
  31. ^ "Bill n°2 : Legal Time Act". Archived from the original on 2012-11-20. Retrieved .
  32. ^ "An Act to Amend the Time Uniformity Act" (PDF). Archived from the original (PDF) on 2006-08-23. Retrieved .
  33. ^ "Changes to daylight saving time in New Brunswick in 2007 (05/12/23)". Archived from the original on 2006-09-01. Retrieved .
  34. ^ Alberta sees the light with a timely announcement
  35. ^ Daylight Saving Time Regulations Archived 2014-04-19 at the Wayback Machine
  36. ^ "New Daylight Saving Time Takes Effect in 2007". Archived from the original on 2013-04-11. Retrieved .
  37. ^ "Nova Scotia to Change Daylight Saving Time". Archived from the original on 2017-09-23. Retrieved .
  38. ^ Yukon To Adopt Extended Daylight Saving Time Starting March 2007 Archived 2013-10-09 at the Wayback Machine
  39. ^ "An Act Respecting Standard Time and Daylight Time in the Province". Archived from the original on 2012-10-20. Retrieved .
  40. ^ "Nunavut News/North "Nunavut to follow new seasonal time standard"". Archived from the original on 2013-12-02. Retrieved .
  41. ^ a b Legal Time Act, CQLR c T-5.1, s 2.
  42. ^ Internet Assigned Numbers Authority. "tzdb data for North and Central America and environs". Retrieved 2020.
  43. ^ a b Interpretation Act, SC 1967-68, c 7, s 28, "standard time".
  44. ^ a b Interpretation Ordinance, YCO 1967/59.

External links


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