How to read it
Riyadh and London, side by side
Each row is one city's day, half an hour to a square, lined up by the hours along the bottom.
- 1Filled: at the desk, 9:00 to 18:00 where that city is.
- 2Grey: up early, up late, or the weekend.
- 3Outline: asleep.
- 4Red band: your slot. Read straight down to see the same moment in every city.
- 5A marks the best time for everyone; B, when there is one, the next best.
The red band is the best time to call on Wed, 21 Oct 2026: 11:00–12:00 in Riyadh, which is 09:00–10:00 in London.
Through the year
How the gap between Riyadh and London moves
London is 2h behind Riyadh today. Daylight saving moves it:
- London 2h behind Riyadh
- London 3h behind Riyadh
- Sun, 25 Oct 2026 London's clocks go back an hour. London is then 3h behind Riyadh.
- Sun, 28 Mar 2027 London's clocks go forward an hour. London is then 2h behind Riyadh.
Hour by hour
Riyadh to London time, hour by hour
On a working day (Wed, 21 Oct 2026), with working hours of 9:00 to 18:00 in both cities. Riyadh works Sun–Thu and London works Mon–Fri, so the shared working days are Mon–Thu.
- Riyadh starts work 09:00 07:00 in London Early
- London starts work 09:00 11:00 in Riyadh At desk
- Riyadh finishes work 18:00 16:00 in London At desk
- London finishes work 18:00 20:00 in Riyadh Late
Show all 24 hours
| Riyadh | London |
|---|---|
| 00:00 Asleep | 22:00 Tue Asleep |
| 01:00 Asleep | 23:00 Tue Asleep |
| 02:00 Asleep | 00:00 Asleep |
| 03:00 Asleep | 01:00 Asleep |
| 04:00 Asleep | 02:00 Asleep |
| 05:00 Asleep | 03:00 Asleep |
| 06:00 Asleep | 04:00 Asleep |
| 07:00 Early | 05:00 Asleep |
| 08:00 Early | 06:00 Asleep |
| 09:00 At desk | 07:00 Early |
| 10:00 At desk | 08:00 Early |
| 11:00 At desk | 09:00 At desk |
| 12:00 At desk | 10:00 At desk |
| 13:00 At desk | 11:00 At desk |
| 14:00 At desk | 12:00 At desk |
| 15:00 At desk | 13:00 At desk |
| 16:00 At desk | 14:00 At desk |
| 17:00 At desk | 15:00 At desk |
| 18:00 Late | 16:00 At desk |
| 19:00 Late | 17:00 At desk |
| 20:00 Late | 18:00 Late |
| 21:00 Late | 19:00 Late |
| 22:00 Asleep | 20:00 Late |
| 23:00 Asleep | 21:00 Late |
Questions
Questions people ask
What is the time difference between Riyadh and London?
London is 2h behind Riyadh (as of Wed, 21 Oct 2026). That changes on Sun, 25 Oct 2026, when London's clocks go back: then London is 3h behind Riyadh.
What is the best time for a call between Riyadh and London?
On a working day, the best time for a call is 11:00–12:00 in Riyadh (09:00–10:00 in London) until 24 Oct 2026 and from 28 Mar 2027, and 12:00–13:00 in Riyadh (09:00–10:00 in London) from 25 Oct 2026 to 27 Mar 2027. Riyadh works Sun–Thu and London works Mon–Fri, so the shared working days are Mon–Thu.
Does Riyadh change its clocks?
No. Riyadh stays on UTC+3 all year.
Does London change its clocks?
Yes. London moves its clocks back an hour on Sun, 25 Oct 2026, and forward an hour on Sun, 28 Mar 2027.
More city pairs
Compare more cities
Riyadh and…
- Riyadh and Mumbai
- Riyadh and Delhi
- Riyadh and Bengaluru
- Riyadh and Dubai
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- Riyadh and Doha
- Riyadh and Singapore
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- Riyadh and Tokyo
- Riyadh and Sydney
- Riyadh and Paris
- Riyadh and Berlin
- Riyadh and Amsterdam
- Riyadh and New York
- Riyadh and Toronto
- Riyadh and Chicago
- Riyadh and Los Angeles
- Riyadh and San Francisco
London and…
- London and Mumbai
- London and Delhi
- London and Bengaluru
- London and Dubai
- London and Abu Dhabi
- London and Doha
- London and Singapore
- London and Hong Kong
- London and Tokyo
- London and Sydney
- London and Paris
- London and Berlin
- London and Amsterdam
- London and New York
- London and Toronto
- London and Chicago
- London and Los Angeles
- London and San Francisco
From the team behind 10:10
Running an event across time zones?
C4E has spent twenty years running conferences, dealer meets and offsites in more than 40 countries, with clients, speakers and crews in different time zones. 10:10 is one of the tools we built for our own shows. It is free, with no account and nothing upsold.