Observatory log
London and Guider, compared
- 01Difference now
London and Guider have the same time.
London: BST (UTC+1) · Guider: WAT (UTC+1)
Next changeFrom 25 October 2026: Guider is 1 hour ahead of London.
- 02Through 2026–2027
- 1 January 2026 – 29 March 2026+1 h
- 29 March 2026 – 25 October 2026Same time
- 25 October 2026 – 28 March 2027+1 h
- 28 March 2027 – 31 October 2027Same time
- 31 October 2027 – 31 December 2027+1 h
Difference of Guider from London. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
- Mon–Fri: 09:00–17:00 in London = 09:00–17:00 in Guider · 8 h
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–17:00 in London = 09:00–17:00 in Guider
Inside both working days (Mon–Fri).
- 05Weekend
London: Saturday and Sunday
Guider: Saturday and Sunday
24 hours
A day in London, in Guider
| London | Guider | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 00:00 | |
| 01:00 | 01:00 | |
| 02:00 | 02:00 | |
| 03:00 | 03:00 | |
| 04:00 | 04:00 | |
| 05:00 | 05:00 | |
| 06:00 | 06:00 | |
| 07:00 | 07:00 | |
| 08:00 | 08:00 | |
| 09:00 | 09:00 | |
| 10:00 | 10:00 | |
| 11:00 | 11:00 | |
| 12:00 | 12:00 | |
| 13:00 | 13:00 | |
| 14:00 | 14:00 | |
| 15:00 | 15:00 | |
| 16:00 | 16:00 | |
| 17:00 | 17:00 | |
| 18:00 | 18:00 | |
| 19:00 | 19:00 | |
| 20:00 | 20:00 | |
| 21:00 | 21:00 | |
| 22:00 | 22:00 | |
| 23:00 | 23:00 |
Working hoursEarly or eveningNightWeekend
Plan a meeting: London and Guider
More time differences with London
Questions
Asked about London and Guider
What is the time difference between London and Guider?
London and Guider have the same time. This holds until 25 October 2026; then Guider is 1 hour ahead of London.
What is the best time for a call between London and Guider?
Inside both working days: Mon–Fri: 09:00–17:00 in London = 09:00–17:00 in Guider · 8 h.
When does the time difference between London and Guider change?
In the next 12 months it changes on: 25 October 2026 (+1 h); 28 March 2027 (Same time).