Riyadh to PST
-11hRiyadh
ASTSOURCEPST
PSTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and PST on the World Map
The map below highlights the AST (Arabia Standard Time) and PST (Pacific 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).
PST – Pacific Standard Time
UTC-08:00Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.
- •Silicon Valley and the world's biggest tech companies operate on Pacific Time.
- •The Hollywood film industry runs on PST/PDT.
- •PST is 3 hours behind EST, creating a significant business hours gap.
- •Vancouver, Canada's third-largest city, uses PST.
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.
Riyadh vs PST: Offsets, DST and Best Call Times
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. PST runs on Pacific Standard Time (PST) at UTC-08:00. That puts Riyadh 11 hours behind PST — a difference of -11h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 10:00 PM in PST on the previous day. Midnight in Riyadh is 1:00 PM in PST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to PST time conversion table
| Riyadh (AST) | PST (PST) | Day |
|---|---|---|
| 12:00 AM | 1:00 PM | previous day |
| 6:00 AM | 7:00 PM | previous day |
| 7:00 AM | 8:00 PM | previous day |
| 8:00 AM | 9:00 PM | previous day |
| 9:00 AM | 10:00 PM | previous day |
| 12:00 PM | 1:00 AM | same day |
| 3:00 PM | 4:00 AM | same day |
| 5:00 PM | 6:00 AM | same day |
| 6:00 PM | 7:00 AM | same day |
| 9:00 PM | 10:00 AM | same day |
Why people convert Riyadh to PST time
- Scheduling a call from Riyadh to PST: a 10:00 AM start in Riyadh lands at 11:00 PM in PST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -11h gap: Riyadh and PST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in PST is 10:00 PM in Riyadh.
- Coordinating a Riyadh-based team with PST 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 -11h gap is not.
- With a -11h gap there is no shared 9-to-5 window, so alternate the early start: one week Riyadh takes the early slot, the next week PST does.
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 PST (Pacific Standard Time)
Pacific Standard Time (PST) covers the west coast of North America, including tech hubs like San Francisco and Seattle, and entertainment capital Los Angeles. The Pacific Time Zone is home to Silicon Valley and the world's largest technology companies. During summer, clocks advance to Pacific Daylight Time (PDT, UTC-07:00). PST is also observed in Baja California, Mexico.
Best time to call between Riyadh and PST
With a -11h offset there is no overlap inside a normal 9 AM – 5 PM day. PST opens at 9:00 AM PST, which is 10:00 PM in Riyadh, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Riyadh and PST have no shared working hours because of the -11h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Riyadh is 11 hours behind PST (AST UTC+03:00 → PST UTC-08:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Riyadh
Does not observe DST
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 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 PST?
Riyadh (AST, UTC+03:00) is 11 hours behind PST (PST, UTC-08:00). The gap is currently -11h.
How do I convert Riyadh time to PST time?
Add -11h to Riyadh local time. For example, 9:00 AM in Riyadh is 10:00 PM in PST (previous day).
What time is it in PST right now?
PST uses PST at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -11h offset from Riyadh.
What is the best time to call PST from Riyadh?
There is no shared working-hours window because of the -11h gap. The closest option is 1:00 PM in Riyadh, which is 2:00 AM in PST.
Which is behind, Riyadh or PST?
Riyadh is 11 hours behind PST. When it is 12:00 PM in Riyadh it is 1:00 AM in PST.
Do Riyadh and PST use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while PST uses PST at UTC-08:00. The IANA identifiers are Asia/Riyadh and America/Los_Angeles.
Does daylight saving time affect the Riyadh–PST difference?
Neither zone observes daylight saving time, so the -11h offset between Riyadh and PST 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 PST?
Not normally. The -11h gap only pushes the date over the previous day.
What is the time difference between Riyadh and PST?
PST is -11h 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 PST in?
PST operates on its local timezone.
What are the business hours in Riyadh?
Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).
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 PST timezone?
Major cities in the PST timezone include Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento.
What is the UTC offset for PST?
Pacific Standard Time (PST) is at UTC-08:00. During daylight saving time, it shifts to PDT.
What should I know about the PST timezone?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
When is it midnight in Riyadh, what time is it in PST?
When it is 12:00 AM (midnight) in Riyadh (AST), it is -11h later in PST (PST).
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