Offset
The time difference between San José and Istanbul is 9 hours.
San José (CST) is behind Istanbul (TRT).
CST: UTC-6
TRT: UTC+3
Neither San José nor Istanbul is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in San José and Istanbul don't overlap on the same weekday. Istanbul is 9 hours ahead of San José.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–11 AM in San José (4 PM–8 PM in Istanbul) — suggest 9:00 AM San José (6:00 PM Istanbul).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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.
Costa Rica
- New Year's DayThu, Jan 1
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Juan Santamaría DaySat, Apr 11
- Labour DayFri, May 1
- Annexation of the Party of Nicoya to Costa RicaSat, Jul 25
- Feast of Our Lady of the AngelsSun, Aug 2
- Mother's DaySat, Aug 15
- Independence DayTue, Sep 15
- Army Abolition DayTue, Dec 1
- Christmas DayFri, Dec 25
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
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| San José | Istanbul | Day |
|---|---|---|
| 12:00 am | 9:00 am | Same day |
| 1:00 am | 10:00 am | Same day |
| 2:00 am | 11:00 am | Same day |
| 3:00 am | 12:00 pm | Same day |
| 4:00 am | 1:00 pm | Same day |
| 5:00 am | 2:00 pm | Same day |
| 6:00 am | 3:00 pm | Same day |
| 7:00 am | 4:00 pm | Same day |
| 8:00 am | 5:00 pm | Same day |
| 9:00 am | 6:00 pm | Same day |
| 10:00 am | 7:00 pm | Same day |
| 11:00 am | 8:00 pm | Same day |
| 12:00 pm | 9:00 pm | Same day |
| 1:00 pm | 10:00 pm | Same day |
| 2:00 pm | 11:00 pm | Same day |
| 3:00 pm | 12:00 am | +1 day |
| 4:00 pm | 1:00 am | +1 day |
| 5:00 pm | 2:00 am | +1 day |
| 6:00 pm | 3:00 am | +1 day |
| 7:00 pm | 4:00 am | +1 day |
| 8:00 pm | 5:00 am | +1 day |
| 9:00 pm | 6:00 am | +1 day |
| 10:00 pm | 7:00 am | +1 day |
| 11:00 pm | 8:00 am | +1 day |
Daylight saving time
Neither San José nor Istanbul observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:24 AM
- Sunset
- 6:02 PM
- Day length
- 12h 38m
- Sunrise
- 5:49 AM
- Sunset
- 8:34 PM
- Day length
- 14h 45m
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 Central Standard Time
- SJO
- SYQ
Airports in Turkey Time
- IST
- SAW
- ESB
- YEI
- ADB
- GZT
- DIY
- ADA
- COV
- ASR
Related conversions
Common conversions
- What is 9:00 am San José in Istanbul?
- 9:00 am San José is 6:00 pm Istanbul.
- What is 12:00 pm San José in Istanbul?
- 12:00 pm San José is 9:00 pm Istanbul.
- What is 12:30 pm San José in Istanbul?
- 12:30 pm San José is 9:30 pm Istanbul.
- What is 2:00 pm San José in Istanbul?
- 2:00 pm San José is 11:00 pm Istanbul.
- What is 5:00 pm San José in Istanbul?
- 5:00 pm San José is 2:00 am Istanbul, the next day.
- What is 11:30 pm San José in Istanbul?
- 11:30 pm San José is 8:30 am Istanbul, the next day.