Offset
The time difference between Santo Domingo and Greenwich Mean Time is 5 hours.
Santo Domingo (AST) is behind Greenwich Mean Time (BST).
AST: UTC-4
BST: UTC+1
Greenwich Mean Time is currently observing daylight saving time; Santo Domingo is not.
When to schedule
Business-hours overlap: 9 AM–12 PM in Santo Domingo (2 PM–5 PM in Greenwich Mean Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Santo Domingo (3:00 PM Greenwich Mean Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Dominican Republic
- New Year's DayThu, Jan 1
- Day of KingsTue, Jan 6
- Our Lady of AltagraciaWed, Jan 21
- Duarte's BirthdayMon, Jan 26
- Independence DayFri, Feb 27
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- Mother's DayThu, May 28
- Corpus ChristiThu, Jun 4
- Restoration DaySun, Aug 16
- Our Lady of MercyThu, Sep 24
- Constitution DayFri, Nov 6
- Christmas DayFri, Dec 25
United Kingdom
- Good FridayFri, Apr 3
- Early May Bank HolidayMon, May 4
- Spring Bank HolidayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Santo Domingo uses Atlantic Standard Time. To call Dominican Republic, dial +1-809 and 1-829.
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
Greenwich Mean Time is approximately 4,350 miles northeast of Santo Domingo.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Santo Domingo | GMT | Day |
|---|---|---|
| 12:00 am | 5:00 am | Same day |
| 1:00 am | 6:00 am | Same day |
| 2:00 am | 7:00 am | Same day |
| 3:00 am | 8:00 am | Same day |
| 4:00 am | 9:00 am | Same day |
| 5:00 am | 10:00 am | Same day |
| 6:00 am | 11:00 am | Same day |
| 7:00 am | 12:00 pm | Same day |
| 8:00 am | 1:00 pm | Same day |
| 9:00 am | 2:00 pm | Same day |
| 10:00 am | 3:00 pm | Same day |
| 11:00 am | 4:00 pm | Same day |
| 12:00 pm | 5:00 pm | Same day |
| 1:00 pm | 6:00 pm | Same day |
| 2:00 pm | 7:00 pm | Same day |
| 3:00 pm | 8:00 pm | Same day |
| 4:00 pm | 9:00 pm | Same day |
| 5:00 pm | 10:00 pm | Same day |
| 6:00 pm | 11:00 pm | Same day |
| 7:00 pm | 12:00 am | +1 day |
| 8:00 pm | 1:00 am | +1 day |
| 9:00 pm | 2:00 am | +1 day |
| 10:00 pm | 3:00 am | +1 day |
| 11:00 pm | 4:00 am | +1 day |
Daylight saving time
Greenwich Mean Time observes daylight saving time; Santo Domingo does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:13 AM
- Sunset
- 7:19 PM
- Day length
- 13h 6m
- Sunrise
- 5:06 AM
- Sunset
- 9:09 PM
- Day length
- 16h 2m
Daylight overlap: 9h 55m — 6:13 AM–4:09 PM in Santo Domingo (11:13 AM–9:09 PM in Greenwich Mean Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Greenwich Mean Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Atlantic Standard Time
- JBQ
- SDQ
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Related conversions
Common conversions
- What is 9:00 am Santo Domingo in GMT?
- 9:00 am Santo Domingo is 2:00 pm GMT.
- What is 12:00 pm Santo Domingo in GMT?
- 12:00 pm Santo Domingo is 5:00 pm GMT.
- What is 12:30 pm Santo Domingo in GMT?
- 12:30 pm Santo Domingo is 5:30 pm GMT.
- What is 2:00 pm Santo Domingo in GMT?
- 2:00 pm Santo Domingo is 7:00 pm GMT.
- What is 5:00 pm Santo Domingo in GMT?
- 5:00 pm Santo Domingo is 10:00 pm GMT.
- What is 11:30 pm Santo Domingo in GMT?
- 11:30 pm Santo Domingo is 4:30 am GMT, the next day.