How to read it
Riyadh and Tokyo, 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: 09:00–10:00 in Riyadh, which is 15:00–16:00 in Tokyo.
Through the year
How the gap between Riyadh and Tokyo moves
Tokyo is 6h ahead of Riyadh today. Neither city changes its clocks, so the gap is the same all year.
- Tokyo 6h ahead of Riyadh
Hour by hour
Riyadh to Tokyo 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 Tokyo works Mon–Fri, so the shared working days are Mon–Thu.
- Riyadh starts work 09:00 15:00 in Tokyo At desk
- Tokyo starts work 09:00 03:00 in Riyadh Asleep
- Riyadh finishes work 18:00 00:00 Thu in Tokyo Asleep
- Tokyo finishes work 18:00 12:00 in Riyadh At desk
Show all 24 hours
| Riyadh | Tokyo |
|---|---|
| 00:00 Asleep | 06:00 Asleep |
| 01:00 Asleep | 07:00 Early |
| 02:00 Asleep | 08:00 Early |
| 03:00 Asleep | 09:00 At desk |
| 04:00 Asleep | 10:00 At desk |
| 05:00 Asleep | 11:00 At desk |
| 06:00 Asleep | 12:00 At desk |
| 07:00 Early | 13:00 At desk |
| 08:00 Early | 14:00 At desk |
| 09:00 At desk | 15:00 At desk |
| 10:00 At desk | 16:00 At desk |
| 11:00 At desk | 17:00 At desk |
| 12:00 At desk | 18:00 Late |
| 13:00 At desk | 19:00 Late |
| 14:00 At desk | 20:00 Late |
| 15:00 At desk | 21:00 Late |
| 16:00 At desk | 22:00 Asleep |
| 17:00 At desk | 23:00 Asleep |
| 18:00 Late | 00:00 Thu Asleep |
| 19:00 Late | 01:00 Thu Asleep |
| 20:00 Late | 02:00 Thu Asleep |
| 21:00 Late | 03:00 Thu Asleep |
| 22:00 Asleep | 04:00 Thu Asleep |
| 23:00 Asleep | 05:00 Thu Asleep |
Questions
Questions people ask
What is the time difference between Riyadh and Tokyo?
Tokyo is 6h ahead of Riyadh (as of Wed, 21 Oct 2026). Neither city changes its clocks, so the gap is the same all year.
What is the best time for a call between Riyadh and Tokyo?
On a working day, the best time for a call is 09:00–10:00 in Riyadh, which is 15:00–16:00 in Tokyo. Everyone is at their desk. Riyadh works Sun–Thu and Tokyo 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 Tokyo change its clocks?
No. Tokyo stays on UTC+9 all year.
More city pairs
Compare more cities
Riyadh and…
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- Riyadh and Paris
- Riyadh and Berlin
- Riyadh and Amsterdam
- Riyadh and New York
- Riyadh and Toronto
- Riyadh and Chicago
- Riyadh and Los Angeles
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Tokyo and…
- Tokyo and Mumbai
- Tokyo and Delhi
- Tokyo and Bengaluru
- Tokyo and Dubai
- Tokyo and Abu Dhabi
- Tokyo and Doha
- Tokyo and Singapore
- Tokyo and Hong Kong
- Tokyo and Sydney
- Tokyo and London
- Tokyo and Paris
- Tokyo and Berlin
- Tokyo and Amsterdam
- Tokyo and New York
- Tokyo and Toronto
- Tokyo and Chicago
- Tokyo and Los Angeles
- Tokyo 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.