How to read it
Riyadh and Singapore, 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 14:00–15:00 in Singapore.
Through the year
How the gap between Riyadh and Singapore moves
Singapore is 5h ahead of Riyadh today. Neither city changes its clocks, so the gap is the same all year.
- Singapore 5h ahead of Riyadh
Hour by hour
Riyadh to Singapore 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 Singapore works Mon–Fri, so the shared working days are Mon–Thu.
- Riyadh starts work 09:00 14:00 in Singapore At desk
- Singapore starts work 09:00 04:00 in Riyadh Asleep
- Riyadh finishes work 18:00 23:00 in Singapore Asleep
- Singapore finishes work 18:00 13:00 in Riyadh At desk
Show all 24 hours
| Riyadh | Singapore |
|---|---|
| 00:00 Asleep | 05:00 Asleep |
| 01:00 Asleep | 06:00 Asleep |
| 02:00 Asleep | 07:00 Early |
| 03:00 Asleep | 08:00 Early |
| 04:00 Asleep | 09:00 At desk |
| 05:00 Asleep | 10:00 At desk |
| 06:00 Asleep | 11:00 At desk |
| 07:00 Early | 12:00 At desk |
| 08:00 Early | 13:00 At desk |
| 09:00 At desk | 14:00 At desk |
| 10:00 At desk | 15:00 At desk |
| 11:00 At desk | 16:00 At desk |
| 12:00 At desk | 17:00 At desk |
| 13:00 At desk | 18:00 Late |
| 14:00 At desk | 19:00 Late |
| 15:00 At desk | 20:00 Late |
| 16:00 At desk | 21:00 Late |
| 17:00 At desk | 22:00 Asleep |
| 18:00 Late | 23:00 Asleep |
| 19:00 Late | 00:00 Thu Asleep |
| 20:00 Late | 01:00 Thu Asleep |
| 21:00 Late | 02:00 Thu Asleep |
| 22:00 Asleep | 03:00 Thu Asleep |
| 23:00 Asleep | 04:00 Thu Asleep |
Questions
Questions people ask
What is the time difference between Riyadh and Singapore?
Singapore is 5h 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 Singapore?
On a working day, the best time for a call is 09:00–10:00 in Riyadh, which is 14:00–15:00 in Singapore. Everyone is at their desk. Riyadh works Sun–Thu and Singapore 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 Singapore change its clocks?
No. Singapore stays on UTC+8 all year.
More city pairs
Compare more cities
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- Riyadh and Paris
- Riyadh and Berlin
- Riyadh and Amsterdam
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- Riyadh and Chicago
- Riyadh and Los Angeles
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Singapore and…
- Singapore and Mumbai
- Singapore and Delhi
- Singapore and Bengaluru
- Singapore and Dubai
- Singapore and Abu Dhabi
- Singapore and Doha
- Singapore and Hong Kong
- Singapore and Tokyo
- Singapore and Sydney
- Singapore and London
- Singapore and Paris
- Singapore and Berlin
- Singapore and Amsterdam
- Singapore and New York
- Singapore and Toronto
- Singapore and Chicago
- Singapore and Los Angeles
- Singapore 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.