Canada stretches over six time zones all of which are behind Coordinated Universal Time (UTC). Time zones stated are universal throughout North America:
Sections of Northwest Territories (NT) and Nunavut (NU) relate to provincial time zones geographically to the south. Labrador uses Atlantic Standard Time except for a small southeast area which is on Newfoundland and Labrador Standard Time.
The 24-hour clock is used on air, train and bus schedules. Daylight saving time is in effect from the second Sunday in March, when the clock is put forward one hour, to the first Sunday in November. Saskatchewan, the eastern reaches of Québec’s north shore, Nunavut’s Southampton Island/Coral Harbour, some eastern sections of British Columbia near the Alberta border, and a few remote areas in northwestern Ontario do not use daylight saving time.