Riyadh to EST
-8hRiyadh
ASTSOURCEEST
ESTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and EST on the World Map
The map below highlights the AST (Arabia Standard Time) and EST (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).
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
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.
Everything You Need to Know About Riyadh and EST Time
Riyadh runs on Arabian Standard Time (AST) at UTC+03:00. EST runs on Eastern Standard Time (EST) at UTC-05:00. That puts Riyadh 8 hours behind EST — a difference of -8h at the current offsets.
In practice, when it is 9:00 AM in Riyadh it is 1:00 AM in EST. Midnight in Riyadh is 4:00 PM in EST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Riyadh to EST time conversion table
| Riyadh (AST) | EST (EST) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | previous day |
| 6:00 AM | 10:00 PM | previous day |
| 7:00 AM | 11:00 PM | previous day |
| 8:00 AM | 12:00 AM | same day |
| 9:00 AM | 1:00 AM | same day |
| 12:00 PM | 4:00 AM | same day |
| 3:00 PM | 7:00 AM | same day |
| 5:00 PM | 9:00 AM | same day |
| 6:00 PM | 10:00 AM | same day |
| 9:00 PM | 1:00 PM | same day |
Why people convert Riyadh to EST time
- Scheduling a call from Riyadh to EST: a 10:00 AM start in Riyadh lands at 2:00 AM in EST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -8h gap: Riyadh and EST 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 EST is 1:00 AM in Riyadh.
- Keeping family and friends in sync: knowing that 8:00 PM in Riyadh is 12:00 PM in EST 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 -8h gap is not.
- With a -8h gap there is no shared 9-to-5 window, so alternate the early start: one week Riyadh takes the early slot, the next week EST 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 EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
Best time to call between Riyadh and EST
With a -8h offset there is no overlap inside a normal 9 AM – 5 PM day. EST opens at 9:00 AM EST, which is 1:00 AM in Riyadh, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Riyadh and EST have no shared working hours because of the -8h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Riyadh is 8 hours behind EST (AST UTC+03:00 → EST UTC-05:00). 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
EST
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
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 EST?
Riyadh (AST, UTC+03:00) is 8 hours behind EST (EST, UTC-05:00). The gap is currently -8h.
How do I convert Riyadh time to EST time?
Add -8h to Riyadh local time. For example, 9:00 AM in Riyadh is 1:00 AM in EST.
What time is it in EST right now?
EST uses EST at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -8h offset from Riyadh.
What is the best time to call EST from Riyadh?
There is no shared working-hours window because of the -8h gap. The closest option is 1:00 PM in Riyadh, which is 5:00 AM in EST.
Which is behind, Riyadh or EST?
Riyadh is 8 hours behind EST. When it is 12:00 PM in Riyadh it is 4:00 AM in EST.
Do Riyadh and EST use different time zones?
Riyadh (Saudi Arabia) uses AST at UTC+03:00, while EST uses EST at UTC-05:00. The IANA identifiers are Asia/Riyadh and America/New_York.
Does daylight saving time affect the Riyadh–EST difference?
Neither zone observes daylight saving time, so the -8h offset between Riyadh and EST 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 EST?
Not normally. The -8h gap only pushes the date over the previous day.
What is the time difference between Riyadh and EST?
EST is -8h 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 EST in?
EST 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 EST timezone?
Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.
What is the UTC offset for EST?
Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.
What should I know about the EST timezone?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
When is it midnight in Riyadh, what time is it in EST?
When it is 12:00 AM (midnight) in Riyadh (AST), it is -8h later in EST (EST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Riyadh time conversions
- riyadh to saudi arabia
- riyadh to dubai
- riyadh to mumbai
- riyadh to delhi
- riyadh to bangalore
- riyadh to kathmandu
- riyadh to bangkok
- riyadh to singapore
- riyadh to hong kong
- riyadh to shanghai
- riyadh to beijing
- riyadh to tokyo
- riyadh to osaka
- riyadh to new york
- riyadh to london
- riyadh to sydney
- riyadh to los angeles
- riyadh to paris
- riyadh to berlin
- riyadh to toronto
- new york to riyadh
- london to riyadh
- dubai to riyadh
- tokyo to riyadh
- singapore to riyadh
- sydney to riyadh
- los angeles to riyadh
- paris to riyadh
- delhi to riyadh
- mumbai to riyadh
- berlin to riyadh
- hong kong to riyadh
- toronto to riyadh
- kathmandu to riyadh
See every conversion from Riyadh →·See every conversion from EST →