Tumkur to Istanbul: time difference
Istanbul is 2 h 30 min behind Tumkur. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Tumkur 07:42 7:42 AM Istanbul 05:12 5:12 AM You –:–
07:42 7:42 AM
India Standard Time · UTC+5:30
☀️ 06:13 · 🌙 18:02
05:12 5:12 AM
GMT+03:00 · UTC+3
☀️ 07:18 · 🌙 18:22
·
−2 h 30 min
Istanbul is 2 h 30 min behind Tumkur.
When you, Tumkur and Istanbul are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇮🇳 Tumkur
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇹🇷 Istanbul
21:30 9:30 PM 22:30 10:30 PM 23:30 11:30 PM 0:30 12:30 AM 1:30 1:30 AM 2:30 2:30 AM 3:30 3:30 AM 4:30 4:30 AM 5:30 5:30 AM 6:30 6:30 AM 7:30 7:30 AM 8:30 8:30 AM 9:30 9:30 AM 10:30 10:30 AM 11:30 11:30 AM 12:30 12:30 PM 13:30 1:30 PM 14:30 2:30 PM 15:30 3:30 PM 16:30 4:30 PM 17:30 5:30 PM 18:30 6:30 PM 19:30 7:30 PM 20:30 8:30 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇮🇳 Tumkur | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 07:42 | 05:12 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | India Standard Time | GMT+03:00 |
| UTC offset | UTC+5:30 | UTC+3 |
| Offset from Tumkur | — | −2 h 30 min |
| IANA zone | Asia/Kolkata | Europe/Istanbul |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:13 | 07:18 |
| Sunset | 18:02 | 18:22 |
| Daylight | 11 h 50 min | 11 h 5 min |
| People on this clock | 100,000 | 15,701,602 |
Compare Tumkur with another city
More comparisons with Tumkur: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Tumkur and Istanbul: common questions
How many hours behind Tumkur is Istanbul?
The clocks in Istanbul are 2 hours and 30 minutes behind those in Tumkur (UTC+3 and UTC+5:30).
What time is it in Istanbul at the start of the working day in Tumkur?
The working day in Tumkur starts at 9:00 AM; in Istanbul it is 6:30 AM at that moment.
What time is it in Istanbul when it is 6:00 PM in Tumkur?
When it is 6:00 PM in Tumkur, it is 3:30 PM in Istanbul.
When is a good time to call Istanbul from Tumkur?
Between 11:30 AM and 6:00 PM in Tumkur – that is 9:00 AM to 3:30 PM in Istanbul – both places are within working hours (9:00 AM–6:00 PM).
When is it still the previous day in Istanbul?
Until 2:30 AM in Tumkur it is still the previous day in Istanbul. The other way round, from 9:30 PM in Istanbul it is already the next day in Tumkur.
Does the time gap between Tumkur and Istanbul change during the year?
No, the clocks change neither in Tumkur nor in Istanbul, so the gap is 2 hours and 30 minutes all year round.
