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America/Santo_Domingo

America/Santo_Domingo is the IANA time zone for the Dominican Republic.

UTC−04:00

Tue, Sep 29 UTC−4 AST

Offsets and daylight saving time

Standard offset
UTC−04:00
Rule
No daylight saving time: UTC−4 all year.

No clock changes are scheduled in the next three years.

Names

Generic name
Atlantic Standard Time
Abbreviation
AST
Long name
Atlantic Standard Time

Use it in code

// JavaScript
new Intl.DateTimeFormat('en-US', { timeZone: 'America/Santo_Domingo' })

# Python
from zoneinfo import ZoneInfo
ZoneInfo('America/Santo_Domingo')

-- PostgreSQL
SELECT now() AT TIME ZONE 'America/Santo_Domingo';

Cities in America/Santo_Domingo

Also in this zone: Santo Domingo Oeste, Santo Domingo Este, San Pedro de Macorís, La Romana, San Cristóbal, Puerto Plata, San Francisco de Macorís, Salvaleón de Higüey, La Vega, Punta Cana, Santa Cruz de Barahona, Bonao, San Juan de la Maguana, Baní, Moca, Azua.

Offset history since 1970

  • 1970–1973: UTC−5 and UTC−4:30 each year
  • 1974: UTC−5, UTC−4:30 and UTC−4 during the year
  • 1975–1999: UTC−4
  • 2000: UTC−5 and UTC−4 during the year
  • 2001–2026: UTC−4

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