Caribbean time zones:

AST – Atlantic Standard Time

Current time in San Juan

Thursday, September 18, 2014 at 12:51:08 PM AST

San Juan is on AST all of year 2014

Find local time and time zone for a location

We recommend looking up by location name, not time zone name.

Time zone offset: UTC - 4 hours

AST is 4 hours behind of Coordinated Universal Time (UTC)

Time zone abbreviations: AST, HNA

Full name is Atlantic Standard Time
HNA – Heure Normale de l'Atlantique (French)
AST – Tiempo Estándar del Atlántico (Spanish)

Email time zone indicator: -0400

An email sent from someone in the AST time zone will have the time zone listed as "-0400" in the headers of the email. (However, "-0400" does not have to be in AST, as other time zones could have the same UTC offset).

For actual dates DST might be observed, look at the examples below
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Where and when is AST observed?

AST is used all year

Time zone maps are under development and will be available later

Example location in AST

Other time zones in Caribbean

Go directly through the links below, or see the Caribbean time zone list

Time zones in other regions

Related links