Toronto to Kolkata (Calcutta): time difference
Kolkata (Calcutta) is 9 h 30 min ahead of Toronto. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇮🇳 Kolkata (Calcutta), India
49
- India Standard Time
- UTC+5:30
- Daytime
☀️ 05:32 · 🌙 17:17 · 11 h 46 min
+9 h 30 min
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Toronto 01:09 1:09 AM Kolkata (Calcutta) 10:39 10:39 AM You –:–
01:09 1:09 AM
Eastern Daylight Time · UTC-4
☀️ 07:25 · 🌙 18:46
10:39 10:39 AM
India Standard Time · UTC+5:30
☀️ 05:32 · 🌙 17:17
·
+9 h 30 min
Kolkata (Calcutta) is 9 h 30 min ahead of Toronto.
When you, Toronto and Kolkata (Calcutta) are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Toronto
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
🇮🇳 Kolkata (Calcutta)
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Toronto | 🇮🇳 Kolkata (Calcutta) |
|---|---|---|
| Local time | 01:09 | 10:39 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | India Standard Time |
| UTC offset | UTC-4 | UTC+5:30 |
| Offset from Toronto | — | +9 h 30 min |
| IANA zone | America/Toronto | Asia/Kolkata |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:25 | 05:32 |
| Sunset | 18:46 | 17:17 |
| Daylight | 11 h 21 min | 11 h 46 min |
| People on this clock | 2,731,571 | 4,486,679 |
Compare Toronto with another city
More comparisons with Toronto: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Toronto and Kolkata (Calcutta): common questions
What is the time difference between Toronto and Kolkata (Calcutta)?
Kolkata is 9 hours and 30 minutes ahead: it uses UTC+5:30, while Toronto is on UTC−4.
If it is 9:00 AM in Toronto, what time is it in Kolkata (Calcutta)?
At 9:00 AM in Toronto, clocks in Kolkata show 6:30 PM.
If it is 6:00 PM in Toronto, what time is it in Kolkata (Calcutta)?
At 6:00 PM in Toronto, clocks in Kolkata show 3:30 AM (the next day).
When do working hours in Toronto and in Kolkata (Calcutta) overlap?
They don't: there are no shared working hours. The start of the day in Toronto (9:00 AM) is 6:30 PM in Kolkata, and the start of the day in Kolkata is 11:30 PM (the previous day) in Toronto.
When does the date change in Kolkata (Calcutta) compared with Toronto?
The new day starts in Kolkata earlier: at 2:30 PM in Toronto it is already midnight there. Until 9:30 AM in Kolkata, Toronto is still on the previous day.
Is the time difference between Toronto and Kolkata (Calcutta) the same all year?
No. Only Toronto switches to summer time, so the gap changes twice a year. From November 1, 2026, Kolkata will be 10 hours and 30 minutes ahead of Toronto.
