What does AST stand for?

AST stands for Atlantic Standard Time. It is UTC-4, used in Atlantic Canada, Caribbean.

What is the UTC offset of AST?

AST (Atlantic Standard Time) is UTC-4, meaning it is 4 hours behind Coordinated Universal Time.

Does AST change for daylight saving time?

Regions on AST generally keep this offset year-round rather than switching for daylight saving.

AST — Atlantic Standard Time

AST

Atlantic Standard Time

UTC-4 Standard time

Atlantic Canada, Caribbean

Now in Halifax: 4:59 AM

Quick facts

Abbreviation: AST
Full name: Atlantic Standard Time
UTC offset: UTC-4
Type: Standard time
Used in: Atlantic Canada, Caribbean
Example zone: America/Halifax

About AST

AST is the abbreviation for Atlantic Standard Time, a time zone offset of UTC-4. It applies in Atlantic Canada, Caribbean.

Time-zone abbreviations are convenient but not unique or official — several codes are shared by more than one zone. When precision matters, use the underlying IANA zone name (for example America/Halifax) or the UTC offset UTC-4 instead.

Frequently asked questions

What does AST stand for?: AST stands for Atlantic Standard Time. It is UTC-4, used in Atlantic Canada, Caribbean.
What is the UTC offset of AST?: AST (Atlantic Standard Time) is UTC-4, meaning it is 4 hours behind Coordinated Universal Time.
Does AST change for daylight saving time?: Regions on AST generally keep this offset year-round rather than switching for daylight saving.