Porto to Istanbul: time difference
Istanbul is 2 h ahead of Porto. 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.
Porto 13:18 1:18 PM Istanbul 15:18 3:18 PM You –:–
13:18 1:18 PM
Western European Summer Time · UTC+1
☀️ 07:41 · 🌙 19:03
15:18 3:18 PM
GMT+03:00 · UTC+3
☀️ 07:10 · 🌙 18:33
·
+2 h
Istanbul is 2 h ahead of Porto.
When you, Porto 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
🇵🇹 Porto
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 | 🇵🇹 Porto | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 13:18 | 15:18 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Western European Summer Time | GMT+03:00 |
| UTC offset | UTC+1 | UTC+3 |
| Offset from Porto | — | +2 h |
| IANA zone | Europe/Lisbon | Europe/Istanbul |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:41 | 07:10 |
| Sunset | 19:03 | 18:33 |
| Daylight | 11 h 23 min | 11 h 23 min |
| People on this clock | 231,828 | 15,701,602 |
Compare Porto with another city
More comparisons with Porto: the time zones next to it and the far side of the clock.
Big time differences
Porto and Istanbul: common questions
How many hours ahead of Porto is Istanbul?
The clocks in Istanbul are 2 hours ahead of those in Porto (UTC+3 and UTC+1).
What time is it in Istanbul when it is 9:00 AM in Porto?
When it is 9:00 AM in Porto, it is 11:00 AM in Istanbul.
What time is it in Istanbul at the end of the working day in Porto?
The working day in Porto ends at 6:00 PM; in Istanbul it is 8:00 PM at that moment.
Is there a time when both Porto and Istanbul are at work?
Yes: from 9:00 AM to 4:00 PM in Porto (11:00 AM to 6:00 PM in Istanbul), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Istanbul?
From 10:00 PM in Porto it is already the next day in Istanbul. The other way round, until 2:00 AM in Istanbul it is still the previous day in Porto.
Does the time gap between Porto and Istanbul change during the year?
Yes – daylight saving time is used in Porto but not in Istanbul. From October 25, 2026, Istanbul will be 3 hours ahead of Porto.
