Guelma to London: time difference
London is 1 h behind Guelma. 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.
Guelma 06:45 6:45 AM London 05:45 5:45 AM You –:–
06:45 6:45 AM
Central European Standard Time · UTC+1
☀️ 06:59 · 🌙 17:30
05:45 5:45 AM
Greenwich Mean Time · UTC+0
☀️ 07:03 · 🌙 16:27
·
−1 h
London is 1 h behind Guelma.
When you, Guelma and London are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇩🇿 Guelma
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
🇬🇧 London
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 | 🇩🇿 Guelma | 🇬🇧 London |
|---|---|---|
| Local time | 06:45 | 05:45 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Central European Standard Time | Greenwich Mean Time |
| UTC offset | UTC+1 | UTC+0 |
| Offset from Guelma | — | −1 h |
| IANA zone | Africa/Algiers | Europe/London |
| Daylight saving | Not observed | On standard time → UTC+1, Mar 28, 02:00 |
| Sunrise | 06:59 | 07:03 |
| Sunset | 17:30 | 16:27 |
| Daylight | 10 h 31 min | 9 h 24 min |
| People on this clock | 120,847 | 8,908,083 |
Compare Guelma with another city
More comparisons with Guelma: the time zones next to it and the far side of the clock.
Big time differences
Guelma and London: common questions
How far behind Guelma is London?
London is 1 hour behind Guelma: UTC+0 against UTC+1.
What time is it in London when it is 9:00 AM in Guelma?
When it is 9:00 AM in Guelma, it is 8:00 AM in London.
What time is it in London when it is 6:00 PM in Guelma?
When it is 6:00 PM in Guelma, it is 5:00 PM in London.
When do working hours in Guelma and in London overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Guelma, which is 9:00 AM to 5:00 PM in London.
When is it still the previous day in London?
Until 1:00 AM in Guelma it is still the previous day in London. The other way round, from 11:00 PM in London it is already the next day in Guelma.
Is the time difference between Guelma and London the same all year?
No. Only London switches to summer time, so the gap changes twice a year. From March 28, 2027, London and Guelma will have the same time.
