Atlantic

Atlantic Time

Atlantic Time is one of the nine federal U.S. time zones. Within populated U.S. territory it covers Puerto Rico and the U.S. Virgin Islands at UTC-04:00 year-round.

Standard: UTC-04:00Not observed

Time-zone facts

Standard time
AST · UTC-04:00
Daylight saving
Not observed
IANA identifiers
America/Puerto_Rico

U.S. places in Atlantic Time

2 U.S. states, districts, or territories are wholly or partly covered by this time zone.

Federal districts and U.S. territories

  • Puerto Ricoentire coverage
  • U.S. Virgin Islandsentire coverage

Daylight saving time

Atlantic Time does not use a seasonal daylight offset in the areas covered by this directory.

  • The inhabited U.S. territories in Atlantic Time do not advance their clocks for daylight saving time.

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Jurisdiction lists provide an overview, but split states and local exceptions require a precise location lookup.

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