Riyadh to Tokyo
+6hRiyadh
ASTSOURCETokyo
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and JST on the World Map
The map below highlights the AST (Arabia Standard Time) and JST (Japan Standard Time) timezone regions across the globe.
AST – Arabia Standard Time
UTC+03:00Arabia Standard Time (AST, UTC+03:00) is the time zone for Saudi Arabia and the other Gulf states of the Arabian peninsula.
- •None of the Gulf states on Arabia Standard Time observe daylight saving.
- •AST is the same offset as Moscow Standard Time and East Africa Time.
- •Riyadh is one hour ahead of Central European Time in winter.
- •The AST abbreviation is shared with Atlantic Standard Time (UTC-04:00).
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
About Riyadh
WikipediaRiyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
Riyadh is growing rapidly as part of Saudi Vision 2030 modernization.
About Tokyo
WikipediaTokyo operates on Japan Standard Time (JST), which is 14 hours ahead of New York. As Asia's largest financial hub, Tokyo trading hours are crucial for global markets.
The Tokyo subway system moves approximately 8.7 million passengers daily.
Everything You Need to Know About Riyadh and Tokyo Time
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. Tokyo runs on Japan Standard Time (JST) at UTC+09:00. That puts Riyadh 6 hours ahead of Tokyo — a difference of +6h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 3:00 PM in Tokyo. Midnight in Riyadh is 6:00 AM in Tokyo. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to Tokyo time conversion table
| Riyadh (AST) | Tokyo (JST) | Day |
|---|---|---|
| 12:00 AM | 6:00 AM | same day |
| 6:00 AM | 12:00 PM | same day |
| 7:00 AM | 1:00 PM | same day |
| 8:00 AM | 2:00 PM | same day |
| 9:00 AM | 3:00 PM | same day |
| 12:00 PM | 6:00 PM | same day |
| 3:00 PM | 9:00 PM | same day |
| 5:00 PM | 11:00 PM | same day |
| 6:00 PM | 12:00 AM | next day |
| 9:00 PM | 3:00 AM | next day |
Why people convert Riyadh to Tokyo time
- Scheduling a call from Riyadh to Tokyo: a 10:00 AM start in Riyadh lands at 4:00 PM in Tokyo, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Riyadh and Tokyo are inside the 9-to-5 working day between 9:00 AM and 11:00 AM AST time (3:00 PM–5:00 PM JST). That is roughly 2 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Riyadh is 2:00 AM in Tokyo makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a +6h gap is not.
- Block 9:00 AM–11:00 AM AST as the recurring meeting window if you work primarily from Riyadh and need Tokyo colleagues present.
About AST (Arabia Standard Time)
Arabia Standard Time (AST) is fixed at UTC+03:00 all year across Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq and Yemen. None of these countries observes daylight saving time, so the offset never changes. The abbreviation collides with Atlantic Standard Time (UTC-04:00) used in eastern Canada and the Caribbean; this page covers the Arabian peninsula meaning. Arabia Standard Time is the same offset as Moscow Standard Time and East Africa Time, which makes scheduling with Europe straightforward — Riyadh is one hour ahead of Central European Time in winter and level with it during European summer time.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between Riyadh and Tokyo
Both Riyadh and Tokyo sit inside the 9 AM – 5 PM working day between 9:00 AM–11:00 AM AST, which is 3:00 PM–5:00 PM JST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Riyadh and Tokyo overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
Riyadh is 6 hours ahead of Tokyo (AST UTC+03:00 → JST UTC+09:00). The shared working window is 9:00 AM–11:00 AM AST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Riyadh and Tokyo?
Riyadh (AST, UTC+03:00) is 6 hours ahead of Tokyo (JST, UTC+09:00). The gap is currently +6h.
How do I convert Riyadh time to Tokyo time?
Add +6h to Riyadh local time. For example, 9:00 AM in Riyadh is 3:00 PM in Tokyo.
What time is it in Tokyo right now?
Tokyo uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +6h offset from Riyadh.
What is the best time to call Tokyo from Riyadh?
Call between 9:00 AM and 11:00 AM AST — that maps to 3:00 PM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, Riyadh or Tokyo?
Riyadh is 6 hours ahead of Tokyo. When it is 12:00 PM in Riyadh it is 6:00 PM in Tokyo.
Do Riyadh and Tokyo use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while Tokyo (Japan) uses JST at UTC+09:00. The IANA identifiers are Asia/Riyadh and Asia/Tokyo.
Does daylight saving time affect the Riyadh–Tokyo difference?
Neither zone observes daylight saving time, so the +6h offset between Riyadh and Tokyo is fixed all year.
Which other cities share Riyadh's time zone?
AST also covers Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
Which countries use AST, Riyadh's zone?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Is there a day difference between Riyadh and Tokyo?
Not normally. The +6h gap only pushes the date over for late-evening times.
What is the time difference between Riyadh and Tokyo?
Tokyo is +6h from Riyadh.
What timezone is Riyadh in?
Riyadh operates on Arabia Standard Time (AST), UTC+3. As OPEC's de facto capital and home to Tadawul, Riyadh time impacts global energy markets.
What timezone is Tokyo in?
Tokyo operates on Japan Standard Time (JST), which is 14 hours ahead of New York. As Asia's largest financial hub, Tokyo trading hours are crucial for global markets.
What are the business hours in Riyadh?
Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).
What are the business hours in Tokyo?
Standard business hours in Tokyo are 9:00 AM - 6:00 PM JST.
What is the best time to schedule a call between Riyadh and Tokyo?
The best overlap for a call is when both cities are in business hours. Riyadh works 8:00 AM - 4:00 PM AST (Sunday-Thursday) and Tokyo works 9:00 AM - 6:00 PM JST (+6h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Riyadh and Tokyo?
Riyadh uses SAR (﷼) while Tokyo uses JPY (¥). Check current exchange rates when planning travel or business between these cities.
How do Riyadh and Tokyo compare in size?
Riyadh has a population of approximately 7.7 million (metro: 7.7 million), while Tokyo has approximately 14 million (metro: 37.4 million).
What are the major landmarks in Riyadh and Tokyo?
Riyadh is known for Kingdom Centre, Masmak Fortress, National Museum. Tokyo is famous for Tokyo Tower, Shibuya Crossing, Senso-ji Temple.
Do Riyadh and Tokyo have stock exchanges?
Yes. Riyadh has the Tadawul (Saudi Stock Exchange) and Tokyo has the TSE (Tokyo Stock Exchange). The +6h time difference affects trading hour overlaps between these exchanges.
Which countries use AST (Arabia Standard Time)?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Does AST observe daylight saving time?
No, AST does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about AST?
None of the Gulf states on Arabia Standard Time observe daylight saving. AST is the same offset as Moscow Standard Time and East Africa Time.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in Riyadh, what time is it in Tokyo?
When it is 12:00 AM (midnight) in Riyadh (AST), it is +6h later in Tokyo (JST).
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