Bucharest to Tehran
+0h 30mBucharest
EESTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
EEST and IRST on the World Map
The map below highlights the EEST (Eastern European Time) and IRST (Iran Standard Time) timezone regions across the globe.
EET – Eastern European Time
UTC+02:00Eastern European Time (EET) is used in Eastern Europe, the Middle East, and northeastern Africa, 2 hours ahead of UTC.
- •EET covers countries across three continents: Europe, Asia, and Africa.
- •Cairo is the most populous city in the EET zone.
- •Turkey used to be on EET but permanently moved to UTC+03:00 in 2016.
- •Finland, the Baltic states, and Greece all use EET.
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).
Comparing Time Zones: Bucharest and Tehran
Bucharest runs on Eastern European Summer Time (EEST) at UTC+03:00, currently observing daylight saving time. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Bucharest 30 minutes ahead of Tehran — a difference of +0h 30m at the current offsets.
In practice, when it is 9:00 AM in Bucharest it is 9:30 AM in Tehran. Midnight in Bucharest is 12:30 AM in Tehran.Bucharest observes daylight saving time while Tehran does not, so the gap narrows or widens by an hour part of the year.
Bucharest to Tehran time conversion table
| Bucharest (EEST) | 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 Bucharest to Tehran time
- Scheduling a call from Bucharest to Tehran: a 10:00 AM start in Bucharest lands at 10:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Bucharest and Tehran are inside the 9-to-5 working day between 9:00 AM and 4:30 PM EEST 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 Bucharest keeps pickup windows and arrival estimates honest across the +0h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM EEST" is unambiguous; "3 PM" across a +0h 30m gap is not.
- Block 9:00 AM–4:30 PM EEST as the recurring meeting window if you work primarily from Bucharest and need Tehran colleagues present.
- Bucharest: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +0h 30m gap.
About EET (Eastern European Time)
Eastern European Time (EET) covers a wide geographical area including Eastern Europe (Finland, Greece, Romania, Bulgaria, Ukraine), the Middle East (Israel, Lebanon, Jordan), and northeastern Africa (Egypt, Libya). During summer, most EET countries switch to Eastern European Summer Time (EEST, UTC+03:00). Turkey permanently moved to UTC+03:00 in 2016, effectively leaving EET.
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 Bucharest and Tehran
Both Bucharest and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–4:30 PM EEST, 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
Bucharest and Tehran share 7 hours of working-hours overlap (9:00 AM–4:30 PM EEST), so scheduling a live meeting is straightforward.
Bucharest is 30 minutes ahead of Tehran (EEST UTC+03:00 → IRST UTC+03:30). The shared working window is 9:00 AM–4:30 PM EEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Bucharest
☀ Currently in DST
Standard: UTC+02:00 · DST: UTC+03:00
Clocks fall back on Sun, Oct 25, 2026
Tehran
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 Bucharest and Tehran?
Bucharest (EEST, UTC+03:00) is 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +0h 30m.
How do I convert Bucharest time to Tehran time?
Add +0h 30m to Bucharest local time. For example, 9:00 AM in Bucharest 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 Bucharest.
What is the best time to call Tehran from Bucharest?
Call between 9:00 AM and 4:30 PM EEST — that maps to 9:30 AM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, Bucharest or Tehran?
Bucharest is 30 minutes ahead of Tehran. When it is 12:00 PM in Bucharest it is 12:30 PM in Tehran.
Do Bucharest and Tehran use different time zones?
Bucharest (Romania) uses EEST at UTC+03:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Europe/Bucharest and Asia/Tehran.
Does daylight saving time affect the Bucharest–Tehran difference?
Yes at the moment: Bucharest is on daylight saving time and Tehran is not, so the +0h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Bucharest's time zone?
EEST also covers Cairo, Athens, Helsinki, Bucharest, Kyiv, Sofia, Jerusalem, Tel Aviv and 4 more.
Which countries use EEST, Bucharest's zone?
EEST is used in Finland, Greece, Romania, Bulgaria, Ukraine, Egypt, Israel, Lebanon and 9 more.
Is there a day difference between Bucharest and Tehran?
Not normally. The +0h 30m gap only pushes the date over for late-evening times.
What is the time difference between Bucharest and Tehran?
Tehran is +0h 30m from Bucharest.
What timezone is Bucharest in?
Bucharest 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 EET (Eastern European Time)?
EET is used in Finland, Greece, Romania, Bulgaria, Ukraine, Egypt, and 11 more countries.
Does EET observe daylight saving time?
Yes, EET switches to EEST during summer months.
What are some interesting facts about EET?
EET covers countries across three continents: Europe, Asia, and Africa. Cairo is the most populous city in the EET zone.
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 Bucharest, what time is it in Tehran?
When it is 12:00 AM (midnight) in Bucharest (EET), it is +0h 30m later in Tehran (IRST).
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