1540x1177 Standard Time Zones Image (626 KB)
1540x1177 Daylight Saving Time Zones Image (677 KB)
In Canada, Time Zones and Daylight Saving Time usually have been regulated by provincial and territorial governments.
Starting in 2007, clocks following the new North American standard for Daylight Saving Time are to be turned forward by one hour on the second Sunday in March and turned back on the first Sunday of November.
These boundaries and changeover dates have serial number 05, broadcast in computer readable form on short wave station CHU along with Canada's official time reference UTC (NRC): Coordinated Universal Time, the modern implementation of Greenwich Time.
A major change in official time practice will be given a new serial number and documented here.