London to Guelma: time difference
Guelma is 1 h ahead of London. 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.
London 21:58 9:58 PM Guelma 22:58 10:58 PM You –:–
21:58 9:58 PM
Greenwich Mean Time · UTC+0
☀️ 07:01 · 🌙 16:28
22:58 10:58 PM
Central European Standard Time · UTC+1
☀️ 06:58 · 🌙 17:31
·
+1 h
Guelma is 1 h ahead of London.
When you, London 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
🇬🇧 London
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 | 🇬🇧 London | 🇩🇿 Guelma |
|---|---|---|
| Local time | 21:58 | 22:58 |
| Local date | Thursday, November 5, 2026 | Thursday, November 5, 2026 |
| Time zone | Greenwich Mean Time | Central European Standard Time |
| UTC offset | UTC+0 | UTC+1 |
| Offset from London | — | +1 h |
| IANA zone | Europe/London | Africa/Algiers |
| Daylight saving | On standard time → UTC+1, Mar 28, 02:00 | Not observed |
| Sunrise | 07:01 | 06:58 |
| Sunset | 16:28 | 17:31 |
| Daylight | 9 h 27 min | 10 h 33 min |
| People on this clock | 8,908,083 | 120,847 |
Compare London with another city
More comparisons with London: the time zones next to it and the far side of the clock.
Big time differences
London and Guelma: common questions
How many hours ahead of London is Guelma?
The clocks in Guelma are 1 hour ahead of those in London (UTC+1 and UTC+0).
What time is it in Guelma when it is 9:00 AM in London?
When it is 9:00 AM in London, it is 10:00 AM in Guelma.
What time is it in Guelma at the end of the working day in London?
The working day in London ends at 6:00 PM; in Guelma it is 7:00 PM at that moment.
When is a good time to call Guelma from London?
Between 9:00 AM and 5:00 PM in London – that is 10:00 AM to 6:00 PM in Guelma – both places are within working hours (9:00 AM–6:00 PM).
From what time in London is it tomorrow in Guelma?
Once it is 11:00 PM in London, the date in Guelma has already changed. Until 1:00 AM in Guelma, it is still the previous day in London.
Is the time difference between London and Guelma the same all year?
No. Only London switches to summer time, so the gap changes twice a year. From March 28, 2027, Guelma and London will have the same time.
