Iran to Tehran
+0hIran
IRSTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
IRST and IRST on the World Map
The map below highlights the IRST (Iran Standard Time) and IRST (Iran Standard Time) timezone regions across the globe.
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.
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).
Time Conversion Guide: Iran to Tehran
Iran runs on Iran Standard Time (IRST) at UTC+03:30. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Iran no time difference Tehran — a difference of +0h at the current offsets.
In practice, when it is 9:00 AM in Iran it is 9:00 AM in Tehran. Midnight in Iran is 12:00 AM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Iran to Tehran time conversion table
| Iran (IRST) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 12:00 AM | same day |
| 6:00 AM | 6:00 AM | same day |
| 7:00 AM | 7:00 AM | same day |
| 8:00 AM | 8:00 AM | same day |
| 9:00 AM | 9:00 AM | same day |
| 12:00 PM | 12:00 PM | same day |
| 3:00 PM | 3:00 PM | same day |
| 5:00 PM | 5:00 PM | same day |
| 6:00 PM | 6:00 PM | same day |
| 9:00 PM | 9:00 PM | same day |
Why people convert Iran to Tehran time
- Scheduling a call from Iran to Tehran: a 10:00 AM start in Iran lands at 10:00 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Iran and Tehran are inside the 9-to-5 working day between 9:00 AM and 5:00 PM IRST time (9:00 AM–5:00 PM IRST). That is roughly 8 hours of usable overlap.
- Booking travel or deliveries: tracking Tehran local time against Iran keeps pickup windows and arrival estimates honest across the +0h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM IRST" is unambiguous; "3 PM" across a +0h gap is not.
- Block 9:00 AM–5:00 PM IRST as the recurring meeting window if you work primarily from Iran and need Tehran colleagues present.
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.
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 Iran and Tehran
Both Iran and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–5:00 PM IRST, which is 9:00 AM–5:00 PM IRST. That gives roughly 8 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Iran and Tehran share 8 hours of working-hours overlap (9:00 AM–5:00 PM IRST), so scheduling a live meeting is straightforward.
Iran is no time difference Tehran (IRST UTC+03:30 → IRST UTC+03:30). The shared working window is 9:00 AM–5:00 PM IRST. 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 Iran and Tehran?
Iran (IRST, UTC+03:30) is no time difference Tehran (IRST, UTC+03:30). The gap is currently +0h.
How do I convert Iran time to Tehran time?
Add +0h to Iran local time. For example, 9:00 AM in Iran is 9:00 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 offset from Iran.
What is the best time to call Tehran from Iran?
Call between 9:00 AM and 5:00 PM IRST — that maps to 9:00 AM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, Iran or Tehran?
Iran and Tehran are currently on the same clock.
Do Iran and Tehran use different time zones?
Iran (Iran) uses IRST at UTC+03:30, while Tehran (Iran) uses IRST at UTC+03:30. They actually share the same IANA zone.
Does daylight saving time affect the Iran–Tehran difference?
Neither zone observes daylight saving time, so the +0h offset between Iran and Tehran is fixed all year.
Which other cities share Iran's time zone?
IRST also covers Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
Which countries use IRST, Iran's zone?
IRST is used in Iran.
What is the time difference between Iran and Tehran?
Tehran is +0h from Iran.
What timezone is Iran in?
Iran 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 IRST (Iran Standard Time)?
IRST is used in Iran.
Does IRST observe daylight saving time?
Yes, IRST switches to IRDT during summer months.
What are some interesting facts about IRST?
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).
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 Iran, what time is it in Tehran?
When it is 12:00 AM (midnight) in Iran (IRST), it is +0h later in Tehran (IRST).
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