beginning DST on the second Sunday of March and ending it on the first Sunday of November. Saint Pierre and Miquelon Saint Pierre and Miquelon, located near the Canadian coast, belongs to France, but observes daylight saving time according to Canadian rules. Greenland Greenland (excluding two minor areas at Danmarkshavn and Pituffik) observes DST and uses the European convention (DST begins 01:00 UTC last Sunday in March and ends 01:00 UTC last Sunday in October). Most populated places in the country are in the UTC−03:00 zone in the winter (UTC−02:00 in the summer). Clocks are changed from 22:00 to 23:00 in the spring (on the Saturday before the last Sunday in March), and reset back from 23:00 to 22:00 in the autumn (on the Saturday before the last Sunday in October). Danmarkshavn does not use DST, because it is a weather station with an airstrip which is supplied from Iceland, which does not use DST. This might apply to some other weather stations in the area. Pituffik/Thule Air Base uses UTC−04:00 and United States conventions on DST because it is a US air base, meaning it is part of the Atlantic Time Zone. Bermuda Bermuda has observed DST annually since 1974. The Caribbean lands Puerto Rico remains all year long in Atlantic Standard Time. (AST). The Bahamas The Commonwealth of The Bahamas observes DST according to the American schedule. Barbados Barbados in the western Atlantic no longer observes Daylight Saving Time, like many Caribbean nations. The last observance of a daylight saving-related time clock adjustment was between Sunday, 20 April 1980 at 02:00 and Thursday, 25 September 1980 at 02:00. On 25 September the clock was shifted from -3:00 to -4:00, where it has remained since. Cuba Cuba normally observes DST from March to October although the precise dates vary. For two years in the mid-2000s, Cuba stayed on DST throughout the year. In 2009 it was on DST from the second Sunday in March to the last Sunday of October. In 2011, it was on DST from the second Sunday in March to the first Sunday in November. Dominica Dominica in the Caribbean does not observe Daylight Saving Time, like several other Caribbean nations. The Dutch Caribbean Islands The Dutch Caribbean islands of Aruba, Bonaire, Curaçao, Saba, Sint Eustatius and Sint Maarten do not observe Daylight Saving Time. The French Caribbean Islands The French Caribbean islands of Guadeloupe, Martinique,