CET to Istanbul time conversion
Istanbul is 2 hours ahead of CET.
CET is always UTC+1. Right now most places that use CET are on CEST (UTC+2): Istanbul is 1 hour ahead of CEST.
Time difference with your location
CET is 1 hour ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in CET to convert it to Istanbul on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · CET → Istanbul
This table converts each hour in CET to Istanbul on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| CET | Istanbul | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 02:002:00 AM | |
| 01:001:00 AM | 03:003:00 AM | |
| 02:002:00 AM | 04:004:00 AM | |
| 03:003:00 AM | 05:005:00 AM | |
| 04:004:00 AM | 06:006:00 AM | |
| 05:005:00 AM | 07:007:00 AM | |
| 06:006:00 AM | 08:008:00 AM | |
| 07:007:00 AM | 09:009:00 AM | |
| 08:008:00 AM | 10:0010:00 AM | ✓ |
| 09:009:00 AM | 11:0011:00 AM | ✓ |
| 10:0010:00 AM | 12:0012:00 PM | ✓ |
| 11:0011:00 AM | 13:001:00 PM | ✓ |
| 12:0012:00 PM | 14:002:00 PM | ✓ |
| 13:001:00 PM | 15:003:00 PM | ✓ |
| 14:002:00 PM | 16:004:00 PM | ✓ |
| 15:003:00 PM | 17:005:00 PM | ✓ |
| 16:004:00 PM | 18:006:00 PM | |
| 17:005:00 PM | 19:007:00 PM | |
| 18:006:00 PM | 20:008:00 PM | |
| 19:007:00 PM | 21:009:00 PM | |
| 20:008:00 PM | 22:0010:00 PM | |
| 21:009:00 PM | 23:0011:00 PM | |
| 22:0010:00 PM | 00:0012:00 AM +1 day | |
| 23:0011:00 PM | 01:001:00 AM +1 day |
Quick conversion examples
These examples use CET (UTC+1) and Istanbul (UTC+3); choosing a date applies the local clock changes.
Conversion formula: Istanbul = CET + 2h · CEST + 1h.
| CET | Istanbul |
|---|---|
| 6:00 AM CET | = 8:00 AM Istanbul |
| 7:00 AM CET | = 9:00 AM Istanbul |
| 8:00 AM CET | = 10:00 AM Istanbul |
| 9:00 AM CET | = 11:00 AM Istanbul |
| 10:00 AM CET | = 12:00 PM Istanbul |
| 12:00 PM CET | = 2:00 PM Istanbul |
| 3:00 PM CET | = 5:00 PM Istanbul |
| 5:00 PM CET | = 7:00 PM Istanbul |
| 6:00 PM CET | = 8:00 PM Istanbul |
| 8:00 PM CET | = 10:00 PM Istanbul |
Overlapping meeting hours
The 08:00–18:00 working day in CET and Istanbul overlaps for 8 hours on 2026-10-21.
- Shared working hours
- 08:00–16:00 CET · 10:00–18:00 Istanbul
Clock changes on both sides, 2026–2028
CET and Istanbul have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | CET | Istanbul |
|---|---|---|
| 2026 | · 02:00 → 03:00 · 03:00 → 02:00 | No clock changes; UTC+3 all year. |
| 2027 | · 02:00 → 03:00 · 03:00 → 02:00 | No clock changes; UTC+3 all year. |
| 2028 | · 02:00 → 03:00 · 03:00 → 02:00 | No clock changes; UTC+3 all year. |
At the start of 2026, Istanbul is 2 hours ahead of CET. The difference changes during the following periods.
- From 2026-03-29 03:00 CEST until 2026-10-25 02:00 CET, Istanbul is 1 hour ahead of CEST.
- From 2027-03-28 03:00 CEST until 2027-10-31 02:00 CET, Istanbul is 1 hour ahead of CEST.
- From 2028-03-26 03:00 CEST until 2028-10-29 02:00 CET, Istanbul is 1 hour ahead of CEST.
Frequently asked questions
What time is 9 AM CET in Istanbul?
9:00 AM CET = 11:00 AM Istanbul, using UTC+1 and UTC+3. Choose a date above for the seasonal local time.
Does the time difference between CET and Istanbul change during the year?
Yes. During 2026–2028: Istanbul is 1 hour ahead of CET; Istanbul is 2 hours ahead of CET. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in Istanbul?
Read the Istanbul clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between CET and Istanbul?
The shared 08:00–18:00 working window is 08:00–16:00 CET / 10:00–18:00 Istanbul, a total of 8 hours.
What is the time difference between CET and Istanbul now?
Right now, Istanbul is 2 hours ahead of CET. Conversion formula: Istanbul = CET + 2h · CEST + 1h.