Keflavik to Lisbon: time difference
Lisbon is 1 h ahead of Keflavik. 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.
Keflavik 23:37 11:37 PM Lisbon 00:37 12:37 AM You –:–
23:37 11:37 PM
Greenwich Mean Time · UTC+0
☀️ 08:29 · 🌙 18:03
00:37 12:37 AM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
·
+1 h
Lisbon is 1 h ahead of Keflavik.
When you, Keflavik and Lisbon are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇮🇸 Keflavik
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
🇵🇹 Lisbon
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇮🇸 Keflavik | 🇵🇹 Lisbon |
|---|---|---|
| Local time | 23:37 | 00:37 |
| Local date | Sunday, October 18, 2026 | Monday, October 19, 2026 |
| Time zone | Greenwich Mean Time | Western European Summer Time |
| UTC offset | UTC+0 | UTC+1 |
| Offset from Keflavik | — | +1 h |
| IANA zone | Atlantic/Reykjavik | Europe/Lisbon |
| Daylight saving | Not observed | On summer time → UTC+0, Oct 25, 01:00 |
| Sunrise | 08:29 | 07:49 |
| Sunset | 18:03 | 18:56 |
| Daylight | 9 h 34 min | 11 h 7 min |
| People on this clock | 15,000 | 545,923 |
Compare Keflavik with another city
More comparisons with Keflavik: the time zones next to it and the far side of the clock.
Big time differences
Keflavik and Lisbon: common questions
What is the time difference between Keflavik and Lisbon?
Lisbon is 1 hour ahead: it uses UTC+1, while Keflavik is on UTC+0.
What time is it in Lisbon when it is 9:00 AM in Keflavik?
When it is 9:00 AM in Keflavik, it is 10:00 AM in Lisbon.
What time is it in Lisbon when it is 6:00 PM in Keflavik?
When it is 6:00 PM in Keflavik, it is 7:00 PM in Lisbon.
Is there a time when both Keflavik and Lisbon are at work?
Yes: from 9:00 AM to 5:00 PM in Keflavik (10:00 AM to 6:00 PM in Lisbon), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Lisbon?
From 11:00 PM in Keflavik it is already the next day in Lisbon. The other way round, until 1:00 AM in Lisbon it is still the previous day in Keflavik.
Is the time difference between Keflavik and Lisbon the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From October 25, 2026, Lisbon and Keflavik will have the same time.
