Current Atlantic AT Time Now in Canada

Hawaii Time

Hawaii-Aleutian Standard Time - HAST (GMT-10)
Hawaii-Aleutian Daylight Time - HADT (GMT-9)

Honolulu

Newfoundland Time

Newfoundland Standard Time - NST (GMT-3:30)
Newfoundland Daylight Time - NDT (GMT-2:30)

St. John's

Alaska Time

Alaska Standard Time - AKST (GMT-9)
Alaska Daylight Time - AKDT (GMT-8)

Anchorage

Atlantic Time

Atlantic Standard Time - AST (GMT-4)
Atlantic Daylight Time - ADT (GMT-3)

Halifax

Pacific Time

Pacific Standard Time - PST (GMT-8)
Pacific Daylight Time - PDT (GMT-7)

Vancouver

Las Vegas

Los Angeles

Mountain Time

Mountain Standard Time - MST (GMT-7)
Mountain Daylight Time - MDT (GMT-6)

Edmonton

Denver

Phoenix

Central Time

Central Standard Time - CST (GMT-6)
Central Daylight Time - CDT (GMT-5)

Winnipeg

Chicago

Eastern Time

Eastern Standard Time - EST (GMT-5)
Eastern Daylight Time - EDT (GMT-4)

Toronto

New York

Atlantic Standard Time (AST) or UTC/GMT -4

Canada and the USA Time Zones

Time Zones in Canada and in the USA.

The Atlantic Time Zone or Atlantic Standard Time (AST) stands for time, which is four hours behind the Greenwich Mean Time (UTC/GMT -4). This zone is based on the mean solar time of the 60th meridian west of the Greenwich Observatory.

Atlantic Daylight Time (ADT) is observed when the clocks are adjusted to daylight saving time. This is during the spring, summer and autumn months. Atlantic Daylight Time is three hours behind the Greenwich Mean Time (UTC/GMT -3).

Atlantic time (AT)

Areas, which follow the Atlantic Time Zone and which do not apply daylight saving time, there Atlantic Standard Time is used also during the summer months. This is for example in the Virgin Islands of the United States. Atlantic Standard Time is commonly shortened to Atlantic Time (AT).

In Canada, the provinces of New Brunswick and Nova Scotia are in the Atlantic Time Zone. Prince Edward Island and small portions of Quebec (eastern Côte-Nord and the Magdalen Islands) are also following the Atlantic Standard Time, as well as the Virgin Islands of the United States.

Effective 2007, the local time changes from AST to ADT at 02:00 LST to 03:00 LDT on the second Sunday in March, and returns at 02:00 LDT to 01:00 LST on the first Sunday in November.

Daylight Saving Time Information

Beginning and end dates of the daylight saving time in the United States and in Canada.

North American Time Zones
Year Begins Ends
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029

Daylight saving time start and and dates in Canada and in the USA.

North American Time Zones

The time zones in North America, in the west from Hawaii and Alaska to the east cost of USA and Canada and all the way to Nova Scotia and Newfoundaland.

North American Time Zones
Hours from UTC/GMT Standard Time Daylight Saving Time
-10 Hawaii-Aleutian
-9 Alaska Hawaii-Aleutian
-8 Pacific Alaska
-7 Mountain Pacific
-6 Central Mountain
-5 Eastern Central
-4 Atlantic Eastern
-3:30 Newfoundland
-3 Atlantic
-2:30 Newfoundland

Time zones in North America.

GMT and UTC

Greenwich Mean Time (GMT) is originally referring to mean solar time at the Royal Observatory in Greenwich, London. GMT and Coordinated Universal Time (UTC) can be seen equivalent when fractions of a second are not important.