Offset
The time difference between Istanbul and Havana is 7 hours.
Istanbul (TRT) is ahead of Havana (CDT).
TRT: UTC+3
CDT: UTC-4
Havana is currently observing daylight saving time; Istanbul is not.
When to schedule
Business-hours overlap: 4 PM–5 PM in Istanbul (9 AM–10 AM in Havana).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Istanbul (9:00 AM Havana).
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.
Turkey
- New Year's DayThu, Jan 1
- National Independence & Children's DayThu, Apr 23
- Labour DayFri, May 1
- Atatürk Commemoration & Youth DayTue, May 19
- Democracy and National Unity DayWed, Jul 15
- Victory DaySun, Aug 30
- Republic DayThu, Oct 29
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
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Istanbul | Havana | Day |
|---|---|---|
| 12:00 am | 5:00 pm | -1 day |
| 1:00 am | 6:00 pm | -1 day |
| 2:00 am | 7:00 pm | -1 day |
| 3:00 am | 8:00 pm | -1 day |
| 4:00 am | 9:00 pm | -1 day |
| 5:00 am | 10:00 pm | -1 day |
| 6:00 am | 11:00 pm | -1 day |
| 7:00 am | 12:00 am | Same day |
| 8:00 am | 1:00 am | Same day |
| 9:00 am | 2:00 am | Same day |
| 10:00 am | 3:00 am | Same day |
| 11:00 am | 4:00 am | Same day |
| 12:00 pm | 5:00 am | Same day |
| 1:00 pm | 6:00 am | Same day |
| 2:00 pm | 7:00 am | Same day |
| 3:00 pm | 8:00 am | Same day |
| 4:00 pm | 9:00 am | Same day |
| 5:00 pm | 10:00 am | Same day |
| 6:00 pm | 11:00 am | Same day |
| 7:00 pm | 12:00 pm | Same day |
| 8:00 pm | 1:00 pm | Same day |
| 9:00 pm | 2:00 pm | Same day |
| 10:00 pm | 3:00 pm | Same day |
| 11:00 pm | 4:00 pm | Same day |
Daylight saving time
Havana observes daylight saving time; Istanbul does not. The offset between the two zones changes when Havana transitions: on Sunday, November 1, 2026, clocks fall back from CDT to CST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:36 PM
- Day length
- 15h 3m
- Sunrise
- 6:44 AM
- Sunset
- 8:15 PM
- Day length
- 13h 31m
Daylight overlap: 6h 52m — 1:44 PM–8:36 PM in Istanbul (6:44 AM–1:36 PM in Havana). Both locations are in daylight during this window.
Cities in these zones
Other cities in Turkey Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Turkey Time
- IST
- SAW
- ESB
- YEI
- ADB
- GZT
- DIY
- ADA
- COV
- ASR
Airports in Cuba Standard Time
- HAV
Related conversions
Common conversions
- What is 9:00 am Istanbul in Havana?
- 9:00 am Istanbul is 2:00 am Havana.
- What is 12:00 pm Istanbul in Havana?
- 12:00 pm Istanbul is 5:00 am Havana.
- What is 12:30 pm Istanbul in Havana?
- 12:30 pm Istanbul is 5:30 am Havana.
- What is 2:00 pm Istanbul in Havana?
- 2:00 pm Istanbul is 7:00 am Havana.
- What is 5:00 pm Istanbul in Havana?
- 5:00 pm Istanbul is 10:00 am Havana.
- What is 11:30 pm Istanbul in Havana?
- 11:30 pm Istanbul is 4:30 pm Havana.