Tokyo to Riyadh Time
JST to AST Converter — 9 AM JST is 3:00 AM AST
Tokyo is 6 hours ahead of Riyadh. Convert any time between Tokyo (JST) and Riyadh (AST) instantly.
Tokyo
Japan
Riyadh
Saudi Arabia
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Time Zone Comparison
Tokyo to Riyadh Time Conversion Table
| Tokyo (JST) | Riyadh (AST) |
|---|---|
| 12:00 AM | 6:00 PM |
| 2:00 AM | 8:00 PM |
| 4:00 AM | 10:00 PM |
| 6:00 AM | 12:00 AM |
| 8:00 AM | 2:00 AM |
| 10:00 AM | 4:00 AM |
| 12:00 PM | 6:00 AM |
| 2:00 PM | 8:00 AM |
| 4:00 PM | 10:00 AM |
| 6:00 PM | 12:00 PM |
| 8:00 PM | 2:00 PM |
| 10:00 PM | 4:00 PM |
Tokyo & Riyadh — Business & Scheduling Guide
Tokyo (Japan) is the world's third-largest economy, with key industries in automotive, electronics, robotics, and precision instruments. Riyadh (Saudi Arabia) is the largest economy in the Middle East, known for oil & gas, construction, finance, and tourism under Vision 2030. With a 6-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Tokyo and Riyadh
The 6-hour difference between Tokyo and Riyadh requires careful scheduling. The best overlap window is typically 2–4 hours when both cities are within working hours. Japanese business culture places high value on respect and hierarchy, with typical hours of 9 AM–6 PM. Saudi business hours typically run 9 AM–5 PM Sunday–Thursday, with business often conducted over meals. Teams often designate specific "overlap hours" for real-time collaboration and use asynchronous communication (Slack, email, recorded video) for the rest of the day.
Daylight Saving Time Considerations
Neither Tokyo nor Riyadh observes Daylight Saving Time — Tokyo stays on JST and Riyadh stays on AST year-round. This makes scheduling between these two cities simpler, as the 6-hour time difference remains constant throughout the year with no DST surprises.
JST to AST — Quick Reference
JST (JST) stands for the timezone used in Tokyo, Japan (UTC+9). AST (AST) is the timezone used in Riyadh, Saudi Arabia (UTC+3). Tokyo is 6 hours ahead of Riyadh.
To convert JST to AST, subtract 6 hours from JST time. For example, JST 9:00 AM = AST 3:00 AM.
Key Facts
- •Time difference: Tokyo (UTC+9) is 6 hours ahead of Riyadh (UTC+3).
- •Daylight Saving Time: Tokyo does not observe DST (JST). Riyadh does not observe DST (AST).
- •Regions: Tokyo is located in Japan and uses the JST time zone. Riyadh is located in Saudi Arabia and uses the AST time zone.
- •Best time to call: The best time to call between Tokyo and Riyadh is 3:00 PM to 4:00 PM in Tokyo time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between Tokyo and Riyadh?
Tokyo is 6 hours ahead of Riyadh.
What time is it in Riyadh when it's 9 AM in Tokyo?
When it's 9:00 AM in Tokyo, it is 3:00 AM in Riyadh.
What time is 9 PM JST in AST?
9 PM JST (Tokyo time) is 3:00 PM AST (Riyadh time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Tokyo and Riyadh?
The best time to schedule a meeting is between 3:00 PM to 4:00 PM in Tokyo time, when both cities are within standard working hours (9 AM – 5 PM). This gives you the maximum overlap window for real-time collaboration.
How do I convert JST to AST?
JST (JST) is the timezone for Tokyo, Japan (UTC+9). AST (AST) is the timezone for Riyadh, Saudi Arabia (UTC+3). Tokyo is 6 hours ahead of Riyadh. Quick examples: 9 AM JST = 3:00 AM AST, 12 PM JST = 6:00 AM AST, 3 PM JST = 9:00 AM AST, 6 PM JST = 12:00 PM AST.
Is Tokyo ahead of or behind Riyadh?
Tokyo is 6 hours ahead of Riyadh. When it's noon in Tokyo, it's 6:00 AM in Riyadh.
Does Tokyo or Riyadh change clocks for Daylight Saving Time?
No, Tokyo does not observe DST — it stays on JST year-round. Riyadh does not observe DST — it stays on AST year-round.
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