Major exceptions include Lloydminster, a town situated on the boundary between Alberta and Saskatchewan Lloydminster's town charter stipulates that it shall observe Mountain Time and DST, putting the town on the same time as all of Alberta, including the major cities of Calgary and Edmonton. Because Saskatchewan does not observe daylight savings time, its time is the same as Mountain Daylight Time when DST is in effect (summer and parts of spring and fall). Ontario (province): a portion of the northwest bordering northeastern ManitobaĪlso, most of the province of Saskatchewan is on Central Standard Time year round.Nunavut (territory): western areas (most of Kivalliq Region and part of Qikiqtaaluk Region).The following Canadian province and territory observe Central Time in the areas noted, while their other areas observe Eastern Time: The province of Manitoba is the only province or territory in Canada that observes Central Time in all areas. Standard clock time in the Central time zones is two hours ahead of that in the Pacific time zones, one hour ahead of that in the Mountain time zones, and one hour behind that of the Eastern time zones. In Mexico, summer time is indicated as horario de verano (' summer schedule') or, officially, horario estacional ('seasonal schedule'). More specifically and officially, occupants of the American and Canadian zones are using Central Standard Time ( CST) when observing standard time and Central Daylight Time ( CDT) when their jurisdictions observe daylight saving time in the spring, summer, and autumn months. In Canada and the United States, time observed in the zones is colloquially and generically referred to as Central Time ( CT), while in Mexico, time in the zone is Tiempo del Centro. The civil standard time throughout the zones, composed of contiguous land and maritime territories in North America, is based on the mean solar time of the 90th meridian west of the Greenwich Observatory.

In North America, the Central Time Zone refers to national time zones which observe standard time by subtracting six hours from UTC (UTC−06), and daylight saving, or summer time by subtracting five hours (UTC−05).

Wisconsin time zone utc