🇵🇹 Viana do Castelo, Portugal
13
- Western European Summer Time
- UTC+1
- Night
☀️ 07:50 · 🌙 18:53 · 11 h 3 min
Viana do Castelo to Istanbul: time difference
Istanbul is 2 h ahead of Viana do Castelo. 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.
Viana do Castelo 21:17 9:17 PM Istanbul 23:17 11:17 PM You –:–
21:17 9:17 PM
Western European Summer Time · UTC+1
☀️ 07:50 · 🌙 18:53
23:17 11:17 PM
GMT+03:00 · UTC+3
☀️ 07:18 · 🌙 18:22
·
+2 h
Istanbul is 2 h ahead of Viana do Castelo.
When you, Viana do Castelo and Istanbul are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇹 Viana do Castelo
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
🇹🇷 Istanbul
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 0 12 AM 1 1 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Viana do Castelo | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 21:17 | 23:17 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Western European Summer Time | GMT+03:00 |
| UTC offset | UTC+1 | UTC+3 |
| Offset from Viana do Castelo | — | +2 h |
| IANA zone | Europe/Lisbon | Europe/Istanbul |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:50 | 07:18 |
| Sunset | 18:53 | 18:22 |
| Daylight | 11 h 3 min | 11 h 5 min |
| People on this clock | 85,784 | 15,701,602 |
Compare Viana do Castelo with another city
More comparisons with Viana do Castelo: the time zones next to it and the far side of the clock.
Big time differences
Viana do Castelo and Istanbul: common questions
What is the time difference between Viana do Castelo and Istanbul?
Istanbul is 2 hours ahead: it uses UTC+3, while Viana do Castelo is on UTC+1.
What time is it in Istanbul when it is 9:00 AM in Viana do Castelo?
When it is 9:00 AM in Viana do Castelo, it is 11:00 AM in Istanbul.
If it is 6:00 PM in Viana do Castelo, what time is it in Istanbul?
At 6:00 PM in Viana do Castelo, clocks in Istanbul show 8:00 PM.
When is a good time to call Istanbul from Viana do Castelo?
Between 9:00 AM and 4:00 PM in Viana do Castelo – that is 11:00 AM to 6:00 PM in Istanbul – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Istanbul compared with Viana do Castelo?
The new day starts in Istanbul earlier: at 10:00 PM in Viana do Castelo it is already midnight there. Until 2:00 AM in Istanbul, Viana do Castelo is still on the previous day.
Does the time difference between Viana do Castelo and Istanbul change?
Yes. The clocks change only in Viana do Castelo. From October 25, 2026, Istanbul will be 3 hours ahead of Viana do Castelo.
