What Does AST Stand For?

AST stands for Atlantic Standard Time UTC 4 Hours

AST, or Atlantic Standard Time, is a time zone that is 4 hours behind Coordinated Universal Time (UTC-4). It is primarily observed in regions located in the Atlantic Time Zone, including parts of Canada, the Caribbean, and in certain areas of South America. AST is utilized during standard time, while some regions may switch to Atlantic Daylight Time (ADT) during daylight saving time, typically advancing the clock by one hour.

Added on 14th April 2008 | Last edited on 17th June 2025 | Edit Acronym

Other Meanings for AST