How to read it
Riyadh and Sydney, 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 17:00–18:00 in Sydney.
Through the year
How the gap between Riyadh and Sydney moves
Sydney is 8h ahead of Riyadh today. Daylight saving moves it:
- Sydney 8h ahead of Riyadh
- Sydney 7h ahead of Riyadh
- Sun, 4 Apr 2027 Sydney's clocks go back an hour. Sydney is then 7h ahead of Riyadh.
- Sun, 3 Oct 2027 Sydney's clocks go forward an hour. Sydney is then 8h ahead of Riyadh.
Hour by hour
Riyadh to Sydney 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 Sydney works Mon–Fri, so the shared working days are Mon–Thu.
- Riyadh starts work 09:00 17:00 in Sydney At desk
- Sydney starts work 09:00 01:00 in Riyadh Asleep
- Riyadh finishes work 18:00 02:00 Thu in Sydney Asleep
- Sydney finishes work 18:00 10:00 in Riyadh At desk
Show all 24 hours
| Riyadh | Sydney |
|---|---|
| 00:00 Asleep | 08:00 Early |
| 01:00 Asleep | 09:00 At desk |
| 02:00 Asleep | 10:00 At desk |
| 03:00 Asleep | 11:00 At desk |
| 04:00 Asleep | 12:00 At desk |
| 05:00 Asleep | 13:00 At desk |
| 06:00 Asleep | 14:00 At desk |
| 07:00 Early | 15:00 At desk |
| 08:00 Early | 16:00 At desk |
| 09:00 At desk | 17:00 At desk |
| 10:00 At desk | 18:00 Late |
| 11:00 At desk | 19:00 Late |
| 12:00 At desk | 20:00 Late |
| 13:00 At desk | 21:00 Late |
| 14:00 At desk | 22:00 Asleep |
| 15:00 At desk | 23:00 Asleep |
| 16:00 At desk | 00:00 Thu Asleep |
| 17:00 At desk | 01:00 Thu Asleep |
| 18:00 Late | 02:00 Thu Asleep |
| 19:00 Late | 03:00 Thu Asleep |
| 20:00 Late | 04:00 Thu Asleep |
| 21:00 Late | 05:00 Thu Asleep |
| 22:00 Asleep | 06:00 Thu Asleep |
| 23:00 Asleep | 07:00 Thu Early |
Questions
Questions people ask
What is the time difference between Riyadh and Sydney?
Sydney is 8h ahead of Riyadh (as of Wed, 21 Oct 2026). That changes on Sun, 4 Apr 2027, when Sydney's clocks go back: then Sydney is 7h ahead of Riyadh.
What is the best time for a call between Riyadh and Sydney?
On a working day, the best time for a call is 09:00–10:00 in Riyadh (17:00–18:00 in Sydney) until 3 Apr 2027 and from 3 Oct 2027, and 09:00–10:00 in Riyadh (16:00–17:00 in Sydney) from 4 Apr 2027 to 2 Oct 2027. Riyadh works Sun–Thu and Sydney 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 Sydney change its clocks?
Yes. Sydney moves its clocks back an hour on Sun, 4 Apr 2027, and forward an hour on Sun, 3 Oct 2027.
More city pairs
Compare more cities
Riyadh and…
- Riyadh and Mumbai
- Riyadh and Delhi
- Riyadh and Bengaluru
- Riyadh and Dubai
- Riyadh and Abu Dhabi
- Riyadh and Doha
- Riyadh and Singapore
- Riyadh and Hong Kong
- Riyadh and Tokyo
- Riyadh and London
- 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
Sydney and…
- Sydney and Mumbai
- Sydney and Delhi
- Sydney and Bengaluru
- Sydney and Dubai
- Sydney and Abu Dhabi
- Sydney and Doha
- Sydney and Singapore
- Sydney and Hong Kong
- Sydney and Tokyo
- Sydney and London
- Sydney and Paris
- Sydney and Berlin
- Sydney and Amsterdam
- Sydney and New York
- Sydney and Toronto
- Sydney and Chicago
- Sydney and Los Angeles
- Sydney 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.