PST to Riyadh
+11hPST
PSTSOURCERiyadh
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
PST and AST on the World Map
The map below highlights the PST (Pacific Standard Time) and AST (Arabia Standard Time) timezone regions across the globe.
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.
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).
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.
PST vs Riyadh: Offsets, DST and Best Call Times
PST runs on Pacific Standard Time (PST) at UTC-08:00. Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. That puts PST 11 hours ahead of Riyadh — a difference of +11h at the current offsets.
In practice, when it is 9:00 AM in PST it is 8:00 PM in Riyadh. Midnight in PST is 11:00 AM in Riyadh. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PST to Riyadh time conversion table
| PST (PST) | Riyadh (AST) | Day |
|---|---|---|
| 12:00 AM | 11:00 AM | same day |
| 6:00 AM | 5:00 PM | same day |
| 7:00 AM | 6:00 PM | same day |
| 8:00 AM | 7:00 PM | same day |
| 9:00 AM | 8:00 PM | same day |
| 12:00 PM | 11:00 PM | same day |
| 3:00 PM | 2:00 AM | next day |
| 5:00 PM | 4:00 AM | next day |
| 6:00 PM | 5:00 AM | next day |
| 9:00 PM | 8:00 AM | next day |
Why people convert PST to Riyadh time
- Scheduling a call from PST to Riyadh: a 10:00 AM start in PST lands at 9:00 PM in Riyadh, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +11h gap: PST and Riyadh 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 Riyadh is 8:00 PM in PST.
- Booking travel or deliveries: tracking Riyadh local time against PST keeps pickup windows and arrival estimates honest across the +11h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM PST" 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 PST takes the early slot, the next week Riyadh does.
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.
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.
Best time to call between PST and Riyadh
With a +11h offset there is no overlap inside a normal 9 AM – 5 PM day. Riyadh opens at 9:00 AM AST, which is 8:00 PM in PST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PST and Riyadh have no shared working hours because of the +11h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PST is 11 hours ahead of Riyadh (PST UTC-08:00 → AST UTC+03:00). 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
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Riyadh
Does not observe DST
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 PST and Riyadh?
PST (PST, UTC-08:00) is 11 hours ahead of Riyadh (AST, UTC+03:00). The gap is currently +11h.
How do I convert PST time to Riyadh time?
Add +11h to PST local time. For example, 9:00 AM in PST is 8:00 PM in Riyadh.
What time is it in Riyadh right now?
Riyadh uses AST at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +11h offset from PST.
What is the best time to call Riyadh from PST?
There is no shared working-hours window because of the +11h gap. The closest option is 1:00 PM in PST, which is 12:00 AM in Riyadh.
Which is ahead, PST or Riyadh?
PST is 11 hours ahead of Riyadh. When it is 12:00 PM in PST it is 11:00 PM in Riyadh.
Do PST and Riyadh use different time zones?
PST uses PST at UTC-08:00, while Riyadh (Saudi Arabia) uses AST at UTC+03:00. The IANA identifiers are America/Los_Angeles and Asia/Riyadh.
Does daylight saving time affect the PST–Riyadh difference?
Neither zone observes daylight saving time, so the +11h offset between PST and Riyadh is fixed all year.
Which other cities share PST's time zone?
PST also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.
Which countries use PST, PST's zone?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PST and Riyadh?
Not normally. The +11h gap only pushes the date over for late-evening times.
What is the time difference between PST and Riyadh?
Riyadh is +11h from PST.
What timezone is PST in?
PST operates on its local timezone.
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 are the business hours in Riyadh?
Standard business hours in Riyadh are 8:00 AM - 4:00 PM AST (Sunday-Thursday).
Which countries use PST (Pacific Standard Time)?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PST observe daylight saving time?
Yes, PST switches to PDT during summer months.
What are some interesting facts about PST?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
Which cities are in the AST timezone?
Major cities in the AST timezone include Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
What is the UTC offset for AST?
Arabia Standard Time (AST) is at UTC+03:00.
What should I know about the AST timezone?
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.
When is it midnight in PST, what time is it in Riyadh?
When it is 12:00 AM (midnight) in PST (PST), it is +11h later in Riyadh (AST).
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