Canada is divided into 6 primary time zones. From east to west these time zones are: Atlantic Standard Time (AST), Eastern Standard Time (EST), Central Standard Time (CST), Mountain Standard Time (MST), Pacific Standard Time (PST), and Alaska Standard Time (AKST).
Atlantic Standard Time (AST), encompasses the Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and Newfoundland and Labrador). This time zone is four hours behind Coordinated Universal Time (UTC) and observes daylight saving time (DST). Atlantic Daylight Time (ADT) is observed in the Eastern Time Zone while the Atlantic provinces are on daylight savings.
Eastern Standard Time (EST) is observed in Ontario, Quebec, and Nunavut. This time zone is five hours behind UTC and observes DST (Eastern Daylight Time (EDT)).
Central Standard Time (CST) is observed in provinces of Manitoba, Saskatchewan, and parts of northwestern Ontario. This time zone is six hours behind UTC and observes DST (Central Daylight Time (CDT)).
Mountain Standard Time (MST) is observed in the Canadian provinces of Alberta, and British Columbia, in parts of Nunavut, and in the northwestern corner of Ontario. This time zone is seven hours behind UTC and observes DST (Mountain Daylight Time (MDT)).
Pacific Standard Time (PST) is observed in the Canadian province of British Columbia, in parts of Yukon, and in the western portion of Northwest Territories. This time zone is eight hours behind UTC and observes DST (Pacific Daylight Time (PDT)).
Alaska Standard Time (AKST) is observed in the Canada's Yukon, in the western portion of the Northwest Territories and in most of Nunavut. This time zone is nine hours behind UTC and observes DST (Alaska Daylight Time (AKDT)).
