Offset
The time difference between Cuba Standard Time and Greenwich Mean Time is 5 hours.
Cuba Standard Time (CDT) is behind Greenwich Mean Time (BST).
CDT: UTC-4
BST: UTC+1
Both zones are currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–12 PM in Cuba Standard Time (2 PM–5 PM in Greenwich Mean Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Cuba Standard Time (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.
Cuba
- Triumph of the RevolutionThu, Jan 1
- Victory of Fidel CastroFri, Jan 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- Day before the Commemoration of the Assault of the Moncada garrisonSat, Jul 25
- Commemoration of the Assault of the Moncada garrisonSun, Jul 26
- Day after the Commemoration of the Assault of the Moncada garrisonMon, Jul 27
- Independence DaySat, Oct 10
- 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
Cuba Standard Time is also known as CST, or CDT. To call Cuba, dial +53.
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
Greenwich Mean Time is approximately 4,650 miles northeast of Cuba Standard Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| CST-CUBA | 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
Both zones observe daylight saving time, but they transition on different dates.
Cuba Standard Time: next transition on Sunday, November 1, 2026.
Greenwich Mean Time: next transition on Sunday, October 25, 2026.
For approximately 7 days between transitions, the offset between Cuba Standard Time and Greenwich Mean Time differs from its typical value. Recurring meetings during this window will shift by one hour.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:44 AM
- Sunset
- 8:14 PM
- Day length
- 13h 30m
- Sunrise
- 4:47 AM
- Sunset
- 9:13 PM
- Day length
- 16h 25m
Daylight overlap: 9h 28m — 6:44 AM–4:13 PM in Cuba Standard Time (11:44 AM–9:13 PM in Greenwich Mean Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Cuba Standard Time
Cities in Greenwich Mean Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Cuba Standard Time
- HAV
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Related conversions
Common conversions
- What is 9:00 am CST-CUBA in GMT?
- 9:00 am CST-CUBA is 2:00 pm GMT.
- What is 12:00 pm CST-CUBA in GMT?
- 12:00 pm CST-CUBA is 5:00 pm GMT.
- What is 12:30 pm CST-CUBA in GMT?
- 12:30 pm CST-CUBA is 5:30 pm GMT.
- What is 2:00 pm CST-CUBA in GMT?
- 2:00 pm CST-CUBA is 7:00 pm GMT.
- What is 5:00 pm CST-CUBA in GMT?
- 5:00 pm CST-CUBA is 10:00 pm GMT.
- What is 11:30 pm CST-CUBA in GMT?
- 11:30 pm CST-CUBA is 4:30 am GMT, the next day.