the early 20th century, Montreal became one of seven cities in Canada to use daylight saving time before 1918, by local ordinance. On December 5, 2005, Quebec added parts of March and November to its daylight saving period, following the United States' Energy Policy Act of 2005. Saskatchewan Although all of Saskatchewan is geographically within the Mountain Time Zone, the province officially observes Central Time year-round. This means that clocks in most of the province match clocks in Winnipeg during the winter and Calgary and Edmonton during the summer. The Saskatchewan Time Act of 1966 designated the use of CST year-round for eastern Saskatchewan and gave local options for western parts of the province. Since 1972, all western regions of the province (except around Lloydminster) have opted to use CST year-round. The city of Lloydminster, which is bisected by the Saskatchewan–Alberta boundary, and its immediate surrounding region, observe Mountain Time year-round, with officially sanctioned daylight saving time (which in the summer puts it in synchronization with the rest of Saskatchewan). This is to keep clocks on the Saskatchewan side in synchronization with those on the Alberta side; Alberta mandates the use of daylight saving time province-wide. Along the Manitoba border, the small, remote Saskatchewan towns of Denare Beach and Creighton unofficially observe Central Daylight Time during the summer, thereby keeping the same time as larger neighbouring Manitoba communities. See also Time in Canada Daylight saving time by country References External links Canadian time zone map from the Atlas of Canada North American time zone maps and border data, including Daylight Saving observance Canada