IST to Bucharest
-2h 30mIST
ISTSOURCEBucharest
EESTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and EEST on the World Map
The map below highlights the IST (India Standard Time) and EEST (Eastern European Time) timezone regions across the globe.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
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.
Comparing Time Zones: IST and Bucharest
IST runs on India Standard Time (IST) at UTC+05:30. Bucharest runs on Eastern European Summer Time (EEST) at UTC+03:00, also currently on daylight saving time. That puts IST 2 hours 30 minutes behind Bucharest — a difference of -2h 30m at the current offsets.
In practice, when it is 9:00 AM in IST it is 6:30 AM in Bucharest. Midnight in IST is 9:30 PM in Bucharest.Bucharest observes daylight saving time while IST does not, so the gap narrows or widens by an hour part of the year.
IST to Bucharest time conversion table
| IST (IST) | Bucharest (EEST) | Day |
|---|---|---|
| 12:00 AM | 9:30 PM | previous day |
| 6:00 AM | 3:30 AM | same day |
| 7:00 AM | 4:30 AM | same day |
| 8:00 AM | 5:30 AM | same day |
| 9:00 AM | 6:30 AM | same day |
| 12:00 PM | 9:30 AM | same day |
| 3:00 PM | 12:30 PM | same day |
| 5:00 PM | 2:30 PM | same day |
| 6:00 PM | 3:30 PM | same day |
| 9:00 PM | 6:30 PM | same day |
Why people convert IST to Bucharest time
- Scheduling a call from IST to Bucharest: a 10:00 AM start in IST lands at 7:30 AM in Bucharest, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both IST and Bucharest are inside the 9-to-5 working day between 11:30 AM and 5:00 PM IST time (9:00 AM–2:30 PM EEST). That is roughly 5 hours 30 minutes of usable overlap.
- Booking travel or deliveries: tracking Bucharest local time against IST keeps pickup windows and arrival estimates honest across the -2h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -2h 30m gap is not.
- Block 11:30 AM–5:00 PM IST as the recurring meeting window if you work primarily from IST and need Bucharest colleagues present.
- Bucharest: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
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.
Best time to call between IST and Bucharest
Both IST and Bucharest sit inside the 9 AM – 5 PM working day between 11:30 AM–5:00 PM IST, which is 9:00 AM–2:30 PM EEST. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
IST and Bucharest share 5 hours of working-hours overlap (11:30 AM–5:00 PM IST), so scheduling a live meeting is straightforward.
IST is 2 hours 30 minutes behind Bucharest (IST UTC+05:30 → EEST UTC+03:00). The shared working window is 11:30 AM–5:00 PM IST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
IST
Does not observe DST
Bucharest
☀ Currently in DST
Standard: UTC+02:00 · DST: UTC+03:00
Clocks fall back on Sun, Oct 25, 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 IST and Bucharest?
IST (IST, UTC+05:30) is 2 hours 30 minutes behind Bucharest (EEST, UTC+03:00). The gap is currently -2h 30m.
How do I convert IST time to Bucharest time?
Add -2h 30m to IST local time. For example, 9:00 AM in IST is 6:30 AM in Bucharest.
What time is it in Bucharest right now?
Bucharest uses EEST at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h 30m offset from IST.
What is the best time to call Bucharest from IST?
Call between 11:30 AM and 5:00 PM IST — that maps to 9:00 AM–2:30 PM EEST and keeps both parties inside the working day.
Which is behind, IST or Bucharest?
IST is 2 hours 30 minutes behind Bucharest. When it is 12:00 PM in IST it is 9:30 AM in Bucharest.
Do IST and Bucharest use different time zones?
IST uses IST at UTC+05:30, while Bucharest (Romania) uses EEST at UTC+03:00. The IANA identifiers are Asia/Kolkata and Europe/Bucharest.
Does daylight saving time affect the IST–Bucharest difference?
Yes at the moment: Bucharest is on daylight saving time and IST is not, so the -2h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share IST's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, IST's zone?
IST is used in India, Sri Lanka.
Is there a day difference between IST and Bucharest?
Not normally. The -2h 30m gap only pushes the date over the previous day.
What is the time difference between IST and Bucharest?
Bucharest is -2h 30m from IST.
What timezone is IST in?
IST operates on its local timezone.
What timezone is Bucharest in?
Bucharest operates on its local timezone.
Which countries use IST (India Standard Time)?
IST is used in India, Sri Lanka.
Does IST observe daylight saving time?
No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.
What are some interesting facts about IST?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
Which cities are in the EET timezone?
Major cities in the EET timezone include Cairo, Athens, Helsinki, Bucharest, Kyiv, Sofia, Jerusalem, Tel Aviv.
What is the UTC offset for EET?
Eastern European Time (EET) is at UTC+02:00. During daylight saving time, it shifts to EEST.
What should I know about the EET timezone?
EET covers countries across three continents: Europe, Asia, and Africa. Cairo is the most populous city in the EET zone.
When is it midnight in IST, what time is it in Bucharest?
When it is 12:00 AM (midnight) in IST (IST), it is -2h 30m later in Bucharest (EET).
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