Istanbul to Ostia: time difference
Ostia is 1 h behind Istanbul. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Istanbul 08:22 8:22 AM Ostia 07:22 7:22 AM You –:–
08:22 8:22 AM
GMT+03:00 · UTC+3
☀️ 07:21 · 🌙 18:18
07:22 7:22 AM
Central European Summer Time · UTC+2
☀️ 07:29 · 🌙 18:24
·
−1 h
Ostia is 1 h behind Istanbul.
When you, Istanbul and Ostia are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇹🇷 Istanbul
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇮🇹 Ostia
23 11 PM 0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇷 Istanbul | 🇮🇹 Ostia |
|---|---|---|
| Local time | 08:22 | 07:22 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | GMT+03:00 | Central European Summer Time |
| UTC offset | UTC+3 | UTC+2 |
| Offset from Istanbul | — | −1 h |
| IANA zone | Europe/Istanbul | Europe/Rome |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:21 | 07:29 |
| Sunset | 18:18 | 18:24 |
| Daylight | 10 h 57 min | 10 h 55 min |
| People on this clock | 15,701,602 | 79,400 |
Compare Istanbul with another city
More comparisons with Istanbul: the time zones next to it and the far side of the clock.
Big time differences
Istanbul and Ostia: common questions
How many hours behind Istanbul is Ostia?
The clocks in Ostia are 1 hour behind those in Istanbul (UTC+2 and UTC+3).
What time is it in Ostia when it is 9:00 AM in Istanbul?
When it is 9:00 AM in Istanbul, it is 8:00 AM in Ostia.
If it is 6:00 PM in Istanbul, what time is it in Ostia?
At 6:00 PM in Istanbul, clocks in Ostia show 5:00 PM.
Is there a time when both Istanbul and Ostia are at work?
Yes: from 10:00 AM to 6:00 PM in Istanbul (9:00 AM to 5:00 PM in Ostia), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Istanbul is it still yesterday in Ostia?
Before 1:00 AM in Istanbul, the date in Ostia has not changed yet. From 11:00 PM in Ostia, it is already the next day in Istanbul.
Does the time difference between Istanbul and Ostia change?
Yes. The clocks change only in Ostia. From October 25, 2026, Ostia will be 2 hours behind Istanbul.
