<P> Daylight saving time (DST) is observed in all Canadian provinces, with the exception of most of Saskatchewan, which observes Central Standard Time year - round even though it is in the Mountain Zone, effectively putting it on DST year - round . Under the Canadian Constitution, laws related to timekeeping are a purely provincial matter . </P> <P> In regions where daylight saving time is used, it commences on the second Sunday of March, and standard time restarts on the first Sunday in November . </P> <P> Five Canadian cities, by local ordinance, used Daylight Saving Time before 1918: Brandon, Manitoba and Winnipeg, Manitoba (already in 1916) as well as Halifax, Nova Scotia, Hamilton, Ontario, and Montreal, Quebec . St. John's, Newfoundland (now Newfoundland and Labrador), which did not become part of Canada until 1949, also used DST before 1918 . </P>

When does daylight savings time end in canada