Singapore to Kolkata (Calcutta): time difference
Kolkata (Calcutta) is 2 h 30 min behind Singapore. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇮🇳 Kolkata (Calcutta), India
33
- India Standard Time
- UTC+5:30
- Sunset
☀️ 05:44 · 🌙 16:58 · 11 h 13 min
−2 h 30 min
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Singapore 19:12 7:12 PM Kolkata (Calcutta) 16:42 4:42 PM You –:–
19:12 7:12 PM
Singapore Standard Time · UTC+8
☀️ 06:47 · 🌙 18:51
16:42 4:42 PM
India Standard Time · UTC+5:30
☀️ 05:44 · 🌙 16:58
·
−2 h 30 min
Kolkata (Calcutta) is 2 h 30 min behind Singapore.
When you, Singapore 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
🇸🇬 Singapore
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)
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 | 🇸🇬 Singapore | 🇮🇳 Kolkata (Calcutta) |
|---|---|---|
| Local time | 19:12 | 16:42 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Singapore Standard Time | India Standard Time |
| UTC offset | UTC+8 | UTC+5:30 |
| Offset from Singapore | — | −2 h 30 min |
| IANA zone | Asia/Singapore | Asia/Kolkata |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:47 | 05:44 |
| Sunset | 18:51 | 16:58 |
| Daylight | 12 h 4 min | 11 h 13 min |
| People on this clock | 5,535,002 | 4,486,679 |
Compare Singapore with another city
More comparisons with Singapore: the time zones next to it and the far side of the clock.
Big time differences
Singapore and Kolkata (Calcutta): common questions
How many hours behind Singapore is Kolkata (Calcutta)?
The clocks in Kolkata are 2 hours and 30 minutes behind those in Singapore (UTC+5:30 and UTC+8).
If it is 9:00 AM in Singapore, what time is it in Kolkata (Calcutta)?
At 9:00 AM in Singapore, clocks in Kolkata show 6:30 AM.
What time is it in Kolkata (Calcutta) at the end of the working day in Singapore?
The working day in Singapore ends at 6:00 PM; in Kolkata it is 3:30 PM at that moment.
Is there a time when both Singapore and Kolkata (Calcutta) are at work?
Yes: from 11:30 AM to 6:00 PM in Singapore (9:00 AM to 3:30 PM in Kolkata), the working days (9:00 AM–6:00 PM) overlap.
Until what time in Singapore is it still yesterday in Kolkata (Calcutta)?
Before 2:30 AM in Singapore, the date in Kolkata has not changed yet. From 9:30 PM in Kolkata, it is already the next day in Singapore.
Is the time difference between Singapore and Kolkata (Calcutta) the same all year?
Yes. Neither Singapore nor Kolkata switches to summer time, so the gap is always 2 hours and 30 minutes.
