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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.
The Government of Canada specifies the ISO 8601 format for all-numeric dates (YYYY-MM-DD; for example, 2025-01-19). [2] It recommends writing the time using the 24-hour clock (15:30) for maximum clarity in both Canadian English and Canadian French, [3] but also allows the 12-hour clock (3:30 p.m.) in English. [4]
In the regions of Canada that use daylight saving time, it begins on the second Sunday of March at 2 a.m. and ends on the first Sunday in November at 2 a.m. As a result, daylight saving time lasts in Canada for a total of 34 weeks (238 days) every year, about 65 percent of the entire year.
UTC−07:00 is an identifier for a time offset from UTC of −07:00. In North America, it is observed in the Mountain Time Zone during standard time, and in the Pacific Time Zone during the other eight months (see Daylight saving time). Some locations use it year-round.
Canada has no longwave time signal transmitters. The American station WWVB is the only option for reliable time signals during geomagnetic storms in the Western Arctic, based on WWVB's published pattern maps. If WWVB is not available, those who need precision time transfer may be able to use GPS time transfer instead.
The steam also powers the clock's sound production, with whistles being used instead of bells to produce the Westminster "chime" and to signal the time. Steam engine in the clock. The steam engine that originally ran the clock is a Stuart #4 single expansion double acting 1" piston engine. [8]
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