24TimeZones.com Timezone abbreviations Atlantic Standard Time

Current AST time

Some locations are observed AST while the others are on daylight savings time/summer time. May be you should see ADT instead.
DST observation ends on Sunday 05 November 2017, 02:00


Saturday, September 23, 2017

Atlantic Standard Time

AST timing

AST (Atlantic Standard Time) is one of the well-known names of UTC-4 time zone which is -4h ahead of UTC (Coordinated Universal Time).

It's used during the winter. During the summer, ADT - Atlantic Daylight Time (UTC-3) is in use.

Some locations use UTC-04:00 all year long.


Time difference to GMT/UTC


Other Time Zones which are named AST

Abbreviation Name
AST Arabia Standard Time

Related timezone


Iana Timezones where AST is currently observed

America/Anguilla, America/Antigua, America/Aruba, America/Barbados, America/Blanc-Sablon, America/Curacao, America/Dominica, America/Grand_Turk, America/Grenada, America/Guadeloupe, America/Kralendijk, America/Lower_Princes, America/Marigot, America/Martinique, America/Montserrat, America/Port_of_Spain, America/Puerto_Rico, America/Santo_Domingo, America/St_Barthelemy, America/St_Kitts, America/St_Lucia, America/St_Thomas, America/St_Vincent, America/Tortola


Other Time Zones in UTC-04

Abbreviation Name
AMT Amazon Time
BOT Bolivia Time
CDT Cuba Daylight Time
CLT Chile Standard Time
COST Colombia Summer Time
EDT Eastern Daylight Time
FKT Falkland Islands Time
GYT Guyana Time
PYT Paraguay Time
VET Venezuelan Standard Time

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