Istanbul to Colleferro: time difference
Colleferro is 1 h behind Istanbul. Live clocks for both, the working hours they share, and how each one sits against your own time.
−1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Istanbul 07:00 7:00 AM Colleferro 06:00 6:00 AM You –:–
07:00 7:00 AM
GMT+03:00 · UTC+3
☀️ 07:20 · 🌙 18:19
06:00 6:00 AM
Central European Summer Time · UTC+2
☀️ 07:25 · 🌙 18:22
·
−1 h
Colleferro is 1 h behind Istanbul.
When you, Istanbul and Colleferro 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
🇮🇹 Colleferro
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 | 🇮🇹 Colleferro |
|---|---|---|
| Local time | 07:00 | 06:00 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 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 | 07:20 | 07:25 |
| Sunset | 18:19 | 18:22 |
| Daylight | 10 h 59 min | 10 h 57 min |
| People on this clock | 15,701,602 | 21,595 |
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 Colleferro: common questions
How many hours behind Istanbul is Colleferro?
The clocks in Colleferro are 1 hour behind those in Istanbul (UTC+2 and UTC+3).
What time is it in Colleferro at the start of the working day in Istanbul?
The working day in Istanbul starts at 9:00 AM; in Colleferro it is 8:00 AM at that moment.
What time is it in Colleferro when it is 6:00 PM in Istanbul?
When it is 6:00 PM in Istanbul, it is 5:00 PM in Colleferro.
When is a good time to call Colleferro from Istanbul?
Between 10:00 AM and 6:00 PM in Istanbul – that is 9:00 AM to 5:00 PM in Colleferro – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Colleferro?
Until 1:00 AM in Istanbul it is still the previous day in Colleferro. The other way round, from 11:00 PM in Colleferro it is already the next day in Istanbul.
Does the time difference between Istanbul and Colleferro change?
Yes. The clocks change only in Colleferro. From October 25, 2026, Colleferro will be 2 hours behind Istanbul.
