Daylight Saving Time in Canada
In Canada, daylight saving time is the practice of turning clocks ahead one hour on the second Sunday in March and back one hour on the first Sunday in November. Canada has six standard time zones that may be abbreviated as PST (pacific standard time), MST (mountain standard time), etc. However, during the daylight saving period between March and November, they may be abbreviated as PDT, MDT, etc. The boundaries of the standard time zones are not necessarily the same as those of the corresponding daylight saving time zones. For example, the mountain time zone includes a portion of northeastern British Columbia in the summer, but not during the winter (see maps below). Boundaries shift because some municipalities choose not to participate in daylight saving time. Saskatchewan follows central standard time year-round.