Lisbon to Keflavik: time difference
Keflavik is 1 h behind Lisbon. 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.
Lisbon 01:16 1:16 AM Keflavik 00:16 12:16 AM You –:–
01:16 1:16 AM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
00:16 12:16 AM
Greenwich Mean Time · UTC+0
☀️ 08:29 · 🌙 18:03
·
−1 h
Keflavik is 1 h behind Lisbon.
When you, Lisbon and Keflavik are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇵🇹 Lisbon
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
🇮🇸 Keflavik
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 | 🇵🇹 Lisbon | 🇮🇸 Keflavik |
|---|---|---|
| Local time | 01:16 | 00:16 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Western European Summer Time | Greenwich Mean Time |
| UTC offset | UTC+1 | UTC+0 |
| Offset from Lisbon | — | −1 h |
| IANA zone | Europe/Lisbon | Atlantic/Reykjavik |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | Not observed |
| Sunrise | 07:49 | 08:29 |
| Sunset | 18:56 | 18:03 |
| Daylight | 11 h 7 min | 9 h 34 min |
| People on this clock | 545,923 | 15,000 |
Compare Lisbon with another city
More comparisons with Lisbon: the time zones next to it and the far side of the clock.
Big time differences
Lisbon and Keflavik: common questions
How many hours behind Lisbon is Keflavik?
The clocks in Keflavik are 1 hour behind those in Lisbon (UTC+0 and UTC+1).
If it is 9:00 AM in Lisbon, what time is it in Keflavik?
At 9:00 AM in Lisbon, clocks in Keflavik show 8:00 AM.
If it is 6:00 PM in Lisbon, what time is it in Keflavik?
At 6:00 PM in Lisbon, clocks in Keflavik show 5:00 PM.
When is a good time to call Keflavik from Lisbon?
Between 10:00 AM and 6:00 PM in Lisbon – that is 9:00 AM to 5:00 PM in Keflavik – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Keflavik?
Until 1:00 AM in Lisbon it is still the previous day in Keflavik. The other way round, from 11:00 PM in Keflavik it is already the next day in Lisbon.
Is the time difference between Lisbon and Keflavik the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From October 25, 2026, Keflavik and Lisbon will have the same time.
