Dominican Republic · AST
Mon, 14 Sept 2026
Timezone Guide
Santo Domingo, Dominican Republic runs on UTC−4. This time zone stays fixed year-round at UTC−4 — daylight saving time is not observed. Santo Domingo and New York currently share the same clock. Standard 9-to-6 working hours overlap for about 9 hours a day with New York. A good time to connect: 09:00–18:00 in Santo Domingo lines up with 09:00–18:00 in New York. There is a 5-hour difference between Santo Domingo and London. Standard 9-to-6 working hours overlap for about 4 hours a day with London. A good time to connect: 09:00–13:00 in Santo Domingo lines up with 14:00–18:00 in London. There is a 13-hour difference between Santo Domingo and Tokyo. Standard working hours don't overlap at all with Tokyo, so meetings need an early or late slot on one side. This timezone is also shared with cities such as Toronto, Caracas, Havana. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Santo Domingo.
Practical Info
Santo Domingo (Dominican Republic) is home to roughly 3.5M people. Today brings about 13.2 hours of daylight: sunrise at 06:06, sunset at 19:18. This time zone stays fixed year-round at UTC−4 — daylight saving time is not observed. It sits in the Northern Hemisphere, about 18° north of the equator. Traffic drives on the right.
Flag
Dominican Republic
Capital
Santo Domingo 👑
Continent
North America
Time Zone
AST · America/Santo_Domingo
Coordinates
18.49°N, 69.93°W
Currency
DOP (RD$)
Calling Code
+1
Driving Side
Right
Hemisphere
Northern
Language
Spanish
Measurement System
Metric
Did You Know?
Santo Domingo was founded in 1496 and holds the first cathedral, first university and first hospital built in the Americas. Its colonial quarter is a UNESCO site and still the city's living centre.
The clock: the Dominican Republic keeps UTC−4 year-round. It shares Hispaniola with Haiti, which observes daylight saving — so for part of the year the island runs on two clocks.
Annual Daylight
Working Hours
2h overlap