Riyadh to Sydney
+7hRiyadh
ASTSOURCESydney
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and AEST on the World Map
The map below highlights the AST (Arabia Standard Time) and AEST (Australian Eastern 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).
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •Queensland does not observe daylight saving time, staying on AEST year-round.
- •Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
- •The Australian Securities Exchange (ASX) operates on AEST/AEDT.
- •AEST is 15 hours ahead of EST during winter.
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 Sydney
WikipediaSydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
Sydney is one of the first major cities to welcome the New Year.
Riyadh to Sydney Time Difference – Complete Guide
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts Riyadh 7 hours ahead of Sydney — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 4:00 PM in Sydney. Midnight in Riyadh is 7:00 AM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to Sydney time conversion table
| Riyadh (AST) | Sydney (AEST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert Riyadh to Sydney time
- Scheduling a call from Riyadh to Sydney: a 10:00 AM start in Riyadh lands at 5:00 PM in Sydney, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Riyadh and Sydney are inside the 9-to-5 working day between 9:00 AM and 10:00 AM AST time (4:00 PM–5:00 PM AEST). That is roughly 1 hours of usable overlap.
- Coordinating a Riyadh-based team with Sydney contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM AST as the recurring meeting window if you work primarily from Riyadh and need Sydney colleagues present.
- Sydney: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.
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 AEST (Australian Eastern Standard Time)
Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.
Best time to call between Riyadh and Sydney
Both Riyadh and Sydney sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM AST, which is 4:00 PM–5:00 PM AEST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Riyadh and Sydney overlap for only 60 minutes (9:00 AM–10:00 AM AST), so meetings have to be booked precisely.
Riyadh is 7 hours ahead of Sydney (AST UTC+03:00 → AEST UTC+10:00). The shared working window is 9:00 AM–10:00 AM AST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Riyadh
Does not observe DST
Sydney
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
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 Sydney?
Riyadh (AST, UTC+03:00) is 7 hours ahead of Sydney (AEST, UTC+10:00). The gap is currently +7h.
How do I convert Riyadh time to Sydney time?
Add +7h to Riyadh local time. For example, 9:00 AM in Riyadh is 4:00 PM in Sydney.
What time is it in Sydney right now?
Sydney uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from Riyadh.
What is the best time to call Sydney from Riyadh?
Call between 9:00 AM and 10:00 AM AST — that maps to 4:00 PM–5:00 PM AEST and keeps both parties inside the working day.
Which is ahead, Riyadh or Sydney?
Riyadh is 7 hours ahead of Sydney. When it is 12:00 PM in Riyadh it is 7:00 PM in Sydney.
Do Riyadh and Sydney use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while Sydney (Australia) uses AEST at UTC+10:00. The IANA identifiers are Asia/Riyadh and Australia/Sydney.
Does daylight saving time affect the Riyadh–Sydney difference?
Neither zone observes daylight saving time, so the +7h offset between Riyadh and Sydney 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 Sydney?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between Riyadh and Sydney?
Sydney is +7h 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 Sydney in?
Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
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 Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
What is the best time to schedule a call between Riyadh and Sydney?
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 Sydney works 9:00 AM - 5:00 PM AEST (+7h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Riyadh and Sydney?
Riyadh uses SAR (﷼) while Sydney uses AUD (A$). Check current exchange rates when planning travel or business between these cities.
How do Riyadh and Sydney compare in size?
Riyadh has a population of approximately 7.7 million (metro: 7.7 million), while Sydney has approximately 5.4 million (metro: 5.4 million).
What are the major landmarks in Riyadh and Sydney?
Riyadh is known for Kingdom Centre, Masmak Fortress, National Museum. Sydney is famous for Sydney Opera House, Sydney Harbour Bridge, Bondi Beach.
Do Riyadh and Sydney have stock exchanges?
Yes. Riyadh has the Tadawul (Saudi Stock Exchange) and Sydney has the ASX (Australian Securities Exchange). The +7h 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 AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in Riyadh, what time is it in Sydney?
When it is 12:00 AM (midnight) in Riyadh (AST), it is +7h later in Sydney (AEST).
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