Atlantic Standard Time Zone
From Wikipedia, the free encyclopedia
The Atlantic Standard Time Zone (AST) is a geographic region that keeps time by subtracting four hours from Coordinated Universal Time (UTC), resulting in UTC-4. The clock time in this zone is based on the mean solar time of the 60th degree meridian west of the Greenwich Observatory.
In Canada, the provinces of New Brunswick, Prince Edward Island, Nova Scotia, and small portions of Quebec are part of the Atlantic Standard Time Zone. Officially, the entirety of Labrador is also in the Atlantic Standard Time Zone; however, the southeastern tip of that region unofficially uses Newfoundland Standard Time, the time used on the island of Newfoundland.
Other parts of the world that keep time by subtracting four hours from UTC include Bermuda, Puerto Rico, the US Virgin Islands, and many other Caribbean islands; as well as Venezuela, parts of Brazil, Paraguay, Chile and Bolivia.
AST is known as Atlantic Daylight Time (ADT) during daylight saving time, and has one hour added to make it three hours behind UTC (UTC-3).
[edit] Major metropolitan areas
- Asuncion, Paraguay
- Barquisimeto, Venezuela
- Bridgetown, Barbados
- Cape Breton Regional Municipality, Nova Scotia
- Caracas, Venezuela
- Charlotte Amalie, U.S. Virgin Islands
- Charlottetown, Prince Edward Island
- Ciudad Guayana, Venezuela
- Fredericton, New Brunswick
- Georgetown, Guyana
- Halifax Regional Municipality, Nova Scotia
- Hamilton, Bermuda
- La Paz, Bolivia
- Manaus, Brazil
- Maracaibo, Venezuela
- Maracay, Venezuela
- Moncton, New Brunswick
- Oranjestad, Aruba
- Port of Spain, Trinidad and Tobago
- Saint John, New Brunswick
- San Juan, Puerto Rico
- Santiago, Chile
- Santo Domingo, Dominican Republic
- Sucre, Bolivia
- Valencia, Venezuela
- Willemstad, Netherlands Antilles
[edit] See also
- Time zone
- Hawaii-Aleutian Standard Time Zone
- Alaska Standard Time Zone
- Pacific Standard Time Zone
- Mountain Standard Time Zone
- Central Standard Time Zone
- Eastern Standard Time Zone
- Newfoundland Standard Time Zone
