Lisbon to Guelma: time difference
Guelma is 1 h ahead of Lisbon. 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.
Lisbon 00:00 12:00 AM Guelma 01:00 1:00 AM You –:–
00:00 12:00 AM
Western European Standard Time · UTC+0
☀️ 07:08 · 🌙 17:34
01:00 1:00 AM
Central European Standard Time · UTC+1
☀️ 06:59 · 🌙 17:30
·
+1 h
Guelma is 1 h ahead of Lisbon.
When you, Lisbon and Guelma 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
🇩🇿 Guelma
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 | 🇵🇹 Lisbon | 🇩🇿 Guelma |
|---|---|---|
| Local time | 00:00 | 01:00 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Western European Standard Time | Central European Standard Time |
| UTC offset | UTC+0 | UTC+1 |
| Offset from Lisbon | — | +1 h |
| IANA zone | Europe/Lisbon | Africa/Algiers |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:08 | 06:59 |
| Sunset | 17:34 | 17:30 |
| Daylight | 10 h 25 min | 10 h 31 min |
| People on this clock | 545,923 | 120,847 |
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 Guelma: common questions
How many hours ahead of Lisbon is Guelma?
The clocks in Guelma are 1 hour ahead of those in Lisbon (UTC+1 and UTC+0).
If it is 9:00 AM in Lisbon, what time is it in Guelma?
At 9:00 AM in Lisbon, clocks in Guelma show 10:00 AM.
What time is it in Guelma when it is 6:00 PM in Lisbon?
When it is 6:00 PM in Lisbon, it is 7:00 PM in Guelma.
When is a good time to call Guelma from Lisbon?
Between 9:00 AM and 5:00 PM in Lisbon – that is 10:00 AM to 6:00 PM in Guelma – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Guelma?
From 11:00 PM in Lisbon it is already the next day in Guelma. The other way round, until 1:00 AM in Guelma it is still the previous day in Lisbon.
Is the time difference between Lisbon and Guelma the same all year?
No. Only Lisbon switches to summer time, so the gap changes twice a year. From March 28, 2027, Guelma and Lisbon will have the same time.
