Riyadh to Hong Kong
+5hRiyadh
ASTSOURCEHong Kong
HKTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and HKT on the World Map
The map below highlights the AST (Arabia Standard Time) and HKT (Hong Kong 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).
HKT – Hong Kong Time
UTC+08:00Hong Kong Time (HKT, UTC+08:00) is the time zone for Hong Kong, 8 hours ahead of UTC.
- •Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979.
- •HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
- •The Hong Kong Stock Exchange opens at 09:30 HKT.
- •Hong Kong Time does not change with the seasons, so its gap to other zones is fixed.
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 Hong Kong
WikipediaHong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
The city has one of the world's most efficient and affordable public transit systems.
Riyadh to Hong Kong Time Difference – Complete Guide
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. Hong Kong runs on Hong Kong Standard Time (HKT) at UTC+08:00. That puts Riyadh 5 hours ahead of Hong Kong — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 2:00 PM in Hong Kong. Midnight in Riyadh is 5:00 AM in Hong Kong. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to Hong Kong time conversion table
| Riyadh (AST) | Hong Kong (HKT) | Day |
|---|---|---|
| 12:00 AM | 5:00 AM | same day |
| 6:00 AM | 11:00 AM | same day |
| 7:00 AM | 12:00 PM | same day |
| 8:00 AM | 1:00 PM | same day |
| 9:00 AM | 2:00 PM | same day |
| 12:00 PM | 5:00 PM | same day |
| 3:00 PM | 8:00 PM | same day |
| 5:00 PM | 10:00 PM | same day |
| 6:00 PM | 11:00 PM | same day |
| 9:00 PM | 2:00 AM | next day |
Why people convert Riyadh to Hong Kong time
- Scheduling a call from Riyadh to Hong Kong: a 10:00 AM start in Riyadh lands at 3:00 PM in Hong Kong, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Riyadh and Hong Kong are inside the 9-to-5 working day between 9:00 AM and 12:00 PM AST time (2:00 PM–5:00 PM HKT). That is roughly 3 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Riyadh is 1:00 AM in Hong Kong 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 +5h gap is not.
- Block 9:00 AM–12:00 PM AST as the recurring meeting window if you work primarily from Riyadh and need Hong Kong 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 HKT (Hong Kong Time)
Hong Kong Time (HKT) is fixed at UTC+08:00 all year and does not observe daylight saving time. Hong Kong last used summer time in 1979 and has kept a single offset since. HKT shares the UTC+08:00 offset with China Standard Time, Singapore Time, Malaysian Time, Philippine Time and Australian Western Standard Time, but is listed separately because Hong Kong maintains its own timekeeping authority. As a major financial centre, Hong Kong's trading hours set the rhythm for markets across Asia, opening at 09:30 HKT which is 01:30 in London and 20:30 the previous evening in New York.
Best time to call between Riyadh and Hong Kong
Both Riyadh and Hong Kong sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM AST, which is 2:00 PM–5:00 PM HKT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Riyadh and Hong Kong overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
Riyadh is 5 hours ahead of Hong Kong (AST UTC+03:00 → HKT UTC+08:00). The shared working window is 9:00 AM–12:00 PM 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 Hong Kong?
Riyadh (AST, UTC+03:00) is 5 hours ahead of Hong Kong (HKT, UTC+08:00). The gap is currently +5h.
How do I convert Riyadh time to Hong Kong time?
Add +5h to Riyadh local time. For example, 9:00 AM in Riyadh is 2:00 PM in Hong Kong.
What time is it in Hong Kong right now?
Hong Kong uses HKT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +5h offset from Riyadh.
What is the best time to call Hong Kong from Riyadh?
Call between 9:00 AM and 12:00 PM AST — that maps to 2:00 PM–5:00 PM HKT and keeps both parties inside the working day.
Which is ahead, Riyadh or Hong Kong?
Riyadh is 5 hours ahead of Hong Kong. When it is 12:00 PM in Riyadh it is 5:00 PM in Hong Kong.
Do Riyadh and Hong Kong use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while Hong Kong (Hong Kong) uses HKT at UTC+08:00. The IANA identifiers are Asia/Riyadh and Asia/Hong_Kong.
Does daylight saving time affect the Riyadh–Hong Kong difference?
Neither zone observes daylight saving time, so the +5h offset between Riyadh and Hong Kong 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 Hong Kong?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between Riyadh and Hong Kong?
Hong Kong is +5h 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 Hong Kong in?
Hong Kong Time (HKT) is UTC+8 with no daylight saving. As a major financial gateway to China, Hong Kong trading hours overlap with European morning sessions.
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 Hong Kong?
Standard business hours in Hong Kong are 9:00 AM - 6:00 PM HKT.
What is the best time to schedule a call between Riyadh and Hong Kong?
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 Hong Kong works 9:00 AM - 6:00 PM HKT (+5h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Riyadh and Hong Kong?
Riyadh uses SAR (﷼) while Hong Kong uses HKD (HK$). Check current exchange rates when planning travel or business between these cities.
How do Riyadh and Hong Kong compare in size?
Riyadh has a population of approximately 7.7 million (metro: 7.7 million), while Hong Kong has approximately 7.5 million (metro: 7.5 million).
What are the major landmarks in Riyadh and Hong Kong?
Riyadh is known for Kingdom Centre, Masmak Fortress, National Museum. Hong Kong is famous for Victoria Peak, Tian Tan Buddha, Victoria Harbour.
Do Riyadh and Hong Kong have stock exchanges?
Yes. Riyadh has the Tadawul (Saudi Stock Exchange) and Hong Kong has the HKEX (Hong Kong Stock Exchange). The +5h 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 HKT timezone?
Major cities in the HKT timezone include Hong Kong, Kowloon, Tsuen Wan, Sha Tin.
What is the UTC offset for HKT?
Hong Kong Time (HKT) is at UTC+08:00.
What should I know about the HKT timezone?
Hong Kong does not observe daylight saving time and has kept UTC+08:00 since 1979. HKT shares its offset with China Standard Time, Singapore Time and Philippine Time.
When is it midnight in Riyadh, what time is it in Hong Kong?
When it is 12:00 AM (midnight) in Riyadh (AST), it is +5h later in Hong Kong (HKT).
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