Saudi Arabia to Tehran
+0h 30mSaudi Arabia
ASTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
AST and IRST on the World Map
The map below highlights the AST (Arabia Standard Time) and IRST (Iran 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).
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
Saudi Arabia to Tehran Time Difference – Complete Guide
Saudi Arabia runs on Arabian Standard Time (AST) at UTC+03:00. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Saudi Arabia 30 minutes ahead of Tehran — a difference of +0h 30m at the current offsets.
In practice, when it is 9:00 AM in Saudi Arabia it is 9:30 AM in Tehran. Midnight in Saudi Arabia is 12:30 AM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Saudi Arabia to Tehran time conversion table
| Saudi Arabia (AST) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 12:30 AM | same day |
| 6:00 AM | 6:30 AM | same day |
| 7:00 AM | 7:30 AM | same day |
| 8:00 AM | 8:30 AM | same day |
| 9:00 AM | 9:30 AM | same day |
| 12:00 PM | 12:30 PM | same day |
| 3:00 PM | 3:30 PM | same day |
| 5:00 PM | 5:30 PM | same day |
| 6:00 PM | 6:30 PM | same day |
| 9:00 PM | 9:30 PM | same day |
Why people convert Saudi Arabia to Tehran time
- Scheduling a call from Saudi Arabia to Tehran: a 10:00 AM start in Saudi Arabia lands at 10:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Saudi Arabia and Tehran are inside the 9-to-5 working day between 9:00 AM and 4:30 PM AST time (9:30 AM–5:00 PM IRST). That is roughly 7 hours 30 minutes of usable overlap.
- Booking travel or deliveries: tracking Tehran local time against Saudi Arabia keeps pickup windows and arrival estimates honest across the +0h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a +0h 30m gap is not.
- Block 9:00 AM–4:30 PM AST as the recurring meeting window if you work primarily from Saudi Arabia and need Tehran 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 IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
Best time to call between Saudi Arabia and Tehran
Both Saudi Arabia and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–4:30 PM AST, which is 9:30 AM–5:00 PM IRST. That gives roughly 7 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Saudi Arabia and Tehran share 7 hours of working-hours overlap (9:00 AM–4:30 PM AST), so scheduling a live meeting is straightforward.
Saudi Arabia is 30 minutes ahead of Tehran (AST UTC+03:00 → IRST UTC+03:30). The shared working window is 9:00 AM–4:30 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 Saudi Arabia and Tehran?
Saudi Arabia (AST, UTC+03:00) is 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +0h 30m.
How do I convert Saudi Arabia time to Tehran time?
Add +0h 30m to Saudi Arabia local time. For example, 9:00 AM in Saudi Arabia is 9:30 AM in Tehran.
What time is it in Tehran right now?
Tehran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the +0h 30m offset from Saudi Arabia.
What is the best time to call Tehran from Saudi Arabia?
Call between 9:00 AM and 4:30 PM AST — that maps to 9:30 AM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, Saudi Arabia or Tehran?
Saudi Arabia is 30 minutes ahead of Tehran. When it is 12:00 PM in Saudi Arabia it is 12:30 PM in Tehran.
Do Saudi Arabia and Tehran use different time zones?
Saudi Arabia (Saudi Arabia) uses AST at UTC+03:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Asia/Riyadh and Asia/Tehran.
Does daylight saving time affect the Saudi Arabia–Tehran difference?
Neither zone observes daylight saving time, so the +0h 30m offset between Saudi Arabia and Tehran is fixed all year.
Which other cities share Saudi Arabia's time zone?
AST also covers Riyadh, Jeddah, Doha, Kuwait City, Baghdad.
Which countries use AST, Saudi Arabia's zone?
AST is used in Saudi Arabia, Qatar, Kuwait, Bahrain, Iraq, Yemen.
Is there a day difference between Saudi Arabia and Tehran?
Not normally. The +0h 30m gap only pushes the date over for late-evening times.
What is the time difference between Saudi Arabia and Tehran?
Tehran is +0h 30m from Saudi Arabia.
What timezone is Saudi Arabia in?
Saudi Arabia operates on its local timezone.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
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 IRST timezone?
Major cities in the IRST timezone include Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
What is the UTC offset for IRST?
Iran Standard Time (IRST) is at UTC+03:30. During daylight saving time, it shifts to IRDT.
What should I know about the IRST timezone?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
When is it midnight in Saudi Arabia, what time is it in Tehran?
When it is 12:00 AM (midnight) in Saudi Arabia (AST), it is +0h 30m later in Tehran (IRST).
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