| CITY | LOCAL TIME | Difference | Coming up |
|---|---|---|---|
| London United Kingdom | 01:00Thu | +5h | Becomes +4h on 25 Oct |
| Berlin Germany | 02:00Thu | +6h | Becomes +5h on 25 Oct |
| Dubai UAE | 04:00Thu | +8h | |
| Tokyo Japan | 09:00Thu | +13h | |
| Sydney Australia | 10:00Thu | +14h | Becomes +15h on 4 Oct |
| New York United States | 20:00 | ±0h | Becomes −1h on 1 Nov |
| Los Angeles United States | 17:00 | −3h | Becomes −4h on 1 Nov |
Roseau, Dominica runs on UTC−4. This time zone stays fixed year-round at UTC−4 — daylight saving time is not observed. Roseau 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 Roseau lines up with 09:00–18:00 in New York. The time difference between Roseau and London is 5 hours. 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 Roseau lines up with 14:00–18:00 in London. The time difference between Roseau and Tokyo is 13 hours. 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 Caracas, La Paz, Santo Domingo. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Roseau.
Roseau (Dominica) is home to roughly 15K people. Today brings about 12.0 hours of daylight: sunrise at 05:55, sunset at 17:55. This time zone stays fixed year-round at UTC−4 — daylight saving time is not observed. It sits in the Northern Hemisphere, about 15° north of the equator. Traffic drives on the left.
Flag
Dominica
Capital
Roseau 👑
Continent
North America
Time Zone
AST · America/Dominica
Coordinates
15.30°N, 61.39°W
Currency
XCD ($)
Calling Code
+1
Driving Side
Left
Hemisphere
Northern
Language
English
Measurement System
Metric
Did You Know?
Dominica's Boiling Lake is a flooded fumarole about 60 metres across whose grey water bubbles at the centre at around 90°C. Reaching it is a six-hour hike through the Valley of Desolation.
The clock: Roseau keeps UTC−4. Dominica has nine active volcanoes, the highest density of any island on Earth.
Roseau lies at 61.4°W. Its time zone, UTC−4, is built around the 60°W meridian. The 1.4° gap between them means the clock runs roughly 6 minutes ahead of the sun: solar noon arrives at about 12:06 rather than 12:00. The zone holds UTC−4 all year — there is no daylight saving here.
The longest day of 2026 is 22 June, with 13h 2m of daylight. The shortest is 22 December, with 11h 13m. The swing between them is 1h 49m. Inside the tropics the day length stays within a narrow band all year.
The earliest sunrise and the latest sunset do not land on the longest day. In Roseau the sun comes up earliest on 4 June at 05:34, while the latest sunset waits until 10 July at 18:40. The equation of time is what separates them: the Earth's elliptical orbit and axial tilt move solar noon back and forth by several minutes over the year.
The sky stays usably light for a while after the sun goes down. In Roseau that civil twilight runs about 21 minutes at the equinox.
Every figure in this section is computed from the city's own latitude, longitude and IANA time zone using NOAA solar algorithms (Spencer, 1971), accurate to about ±2 arcminutes below 65° latitude.
The official timezone for Roseau, Dominica is America/Dominica with a current UTC offset of UTC−4.
Roseau has an estimated population of 15K and is located at coordinates 15.30°N, 61.39°W. It is the capital city of Dominica.
Roseau gets 13h 2m of daylight on its longest day and 11h 13m on its shortest, averaging 12h 8m a day across the year.
Solar noon in Roseau falls at about 12:06 on UTC−4 standard time, because the city sits 1.4° from the meridian its zone is built on.
A Lake That Boils: Dominica's Boiling Lake is a flooded fumarole about 60 metres across whose grey water bubbles at the centre at around 90°C. Reaching it is a six-hour hike through the Valley of Desolation.