Addis Ababa to Tehran
+0h 30mAddis Ababa
EATSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
EAT and IRST on the World Map
The map below highlights the EAT (East Africa Time) and IRST (Iran Standard Time) timezone regions across the globe.
EAT – East Africa Time
UTC+03:00East Africa Time (EAT) is the time zone for East Africa, 3 hours ahead of UTC.
- •Nairobi is a major tech hub in Africa, often called 'Silicon Savannah'.
- •Ethiopia uses its own calendar, which is 7-8 years behind the Gregorian calendar.
- •EAT is the same offset as MSK (Moscow Time).
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).
Everything You Need to Know About Addis Ababa and Tehran Time
Addis Ababa runs on East Africa Time (EAT) at UTC+03:00. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Addis Ababa 30 minutes ahead of Tehran — a difference of +0h 30m at the current offsets.
In practice, when it is 9:00 AM in Addis Ababa it is 9:30 AM in Tehran. Midnight in Addis Ababa is 12:30 AM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Addis Ababa to Tehran time conversion table
| Addis Ababa (EAT) | 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 Addis Ababa to Tehran time
- Scheduling a call from Addis Ababa to Tehran: a 10:00 AM start in Addis Ababa lands at 10:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Addis Ababa and Tehran are inside the 9-to-5 working day between 9:00 AM and 4:30 PM EAT time (9:30 AM–5:00 PM IRST). That is roughly 7 hours 30 minutes of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Addis Ababa is 8:30 PM in Tehran makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM EAT" is unambiguous; "3 PM" across a +0h 30m gap is not.
- Block 9:00 AM–4:30 PM EAT as the recurring meeting window if you work primarily from Addis Ababa and need Tehran colleagues present.
About EAT (East Africa Time)
East Africa Time (EAT) is used in the countries of East Africa including Kenya, Ethiopia, Tanzania, Uganda, and others. EAT does not observe daylight saving time and shares the same offset as Moscow Standard Time (MSK).
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 Addis Ababa and Tehran
Both Addis Ababa and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–4:30 PM EAT, 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
Addis Ababa and Tehran share 7 hours of working-hours overlap (9:00 AM–4:30 PM EAT), so scheduling a live meeting is straightforward.
Addis Ababa is 30 minutes ahead of Tehran (EAT UTC+03:00 → IRST UTC+03:30). The shared working window is 9:00 AM–4:30 PM EAT. 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 Addis Ababa and Tehran?
Addis Ababa (EAT, UTC+03:00) is 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +0h 30m.
How do I convert Addis Ababa time to Tehran time?
Add +0h 30m to Addis Ababa local time. For example, 9:00 AM in Addis Ababa 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 Addis Ababa.
What is the best time to call Tehran from Addis Ababa?
Call between 9:00 AM and 4:30 PM EAT — that maps to 9:30 AM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, Addis Ababa or Tehran?
Addis Ababa is 30 minutes ahead of Tehran. When it is 12:00 PM in Addis Ababa it is 12:30 PM in Tehran.
Do Addis Ababa and Tehran use different time zones?
Addis Ababa (Ethiopia) uses EAT at UTC+03:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Africa/Addis_Ababa and Asia/Tehran.
Does daylight saving time affect the Addis Ababa–Tehran difference?
Neither zone observes daylight saving time, so the +0h 30m offset between Addis Ababa and Tehran is fixed all year.
Which other cities share Addis Ababa's time zone?
EAT also covers Nairobi, Addis Ababa, Dar es Salaam, Kampala, Mogadishu, Antananarivo.
Which countries use EAT, Addis Ababa's zone?
EAT is used in Kenya, Ethiopia, Tanzania, Uganda, Somalia, Madagascar, Eritrea, Djibouti.
Is there a day difference between Addis Ababa and Tehran?
Not normally. The +0h 30m gap only pushes the date over for late-evening times.
What is the time difference between Addis Ababa and Tehran?
Tehran is +0h 30m from Addis Ababa.
What timezone is Addis Ababa in?
Addis Ababa 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 EAT (East Africa Time)?
EAT is used in Kenya, Ethiopia, Tanzania, Uganda, Somalia, Madagascar, and 2 more countries.
Does EAT observe daylight saving time?
No, EAT does not observe daylight saving time and remains at UTC+03:00 year-round.
What are some interesting facts about EAT?
Nairobi is a major tech hub in Africa, often called 'Silicon Savannah'. Ethiopia uses its own calendar, which is 7-8 years behind the Gregorian calendar.
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 Addis Ababa, what time is it in Tehran?
When it is 12:00 AM (midnight) in Addis Ababa (EAT), it is +0h 30m later in Tehran (IRST).
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