Phuket to Kolkata (Calcutta): time difference
Kolkata (Calcutta) is 1 h 30 min behind Phuket. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇮🇳 Kolkata (Calcutta), India
01
- India Standard Time
- UTC+5:30
- Daytime
☀️ 05:32 · 🌙 17:17 · 11 h 46 min
−1 h 30 min
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Phuket 14:03 2:03 PM Kolkata (Calcutta) 12:33 12:33 PM You –:–
14:03 2:03 PM
Indochina Time · UTC+7
☀️ 06:14 · 🌙 18:14
12:33 12:33 PM
India Standard Time · UTC+5:30
☀️ 05:32 · 🌙 17:17
·
−1 h 30 min
Kolkata (Calcutta) is 1 h 30 min behind Phuket.
When you, Phuket 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
🇹🇭 Phuket
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)
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 21:30 9:30 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇭 Phuket | 🇮🇳 Kolkata (Calcutta) |
|---|---|---|
| Local time | 14:03 | 12:33 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Indochina Time | India Standard Time |
| UTC offset | UTC+7 | UTC+5:30 |
| Offset from Phuket | — | −1 h 30 min |
| IANA zone | Asia/Bangkok | Asia/Kolkata |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:14 | 05:32 |
| Sunset | 18:14 | 17:17 |
| Daylight | 12 h | 11 h 46 min |
| People on this clock | 79,308 | 4,486,679 |
Compare Phuket with another city
More comparisons with Phuket: the time zones next to it and the far side of the clock.
Big time differences
Phuket and Kolkata (Calcutta): common questions
What is the time difference between Phuket and Kolkata (Calcutta)?
Kolkata is 1 hour and 30 minutes behind: it uses UTC+5:30, while Phuket is on UTC+7.
What time is it in Kolkata (Calcutta) at the start of the working day in Phuket?
The working day in Phuket starts at 9:00 AM; in Kolkata it is 7:30 AM at that moment.
What time is it in Kolkata (Calcutta) at the end of the working day in Phuket?
The working day in Phuket ends at 6:00 PM; in Kolkata it is 4:30 PM at that moment.
Is there a time when both Phuket and Kolkata (Calcutta) are at work?
Yes: from 10:30 AM to 6:00 PM in Phuket (9:00 AM to 4:30 PM in Kolkata), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Kolkata (Calcutta) compared with Phuket?
The new day starts in Kolkata later: until 1:30 AM in Phuket, it is still the previous day there. From 10:30 PM in Kolkata, Phuket is already on the next day.
Does the time difference between Phuket and Kolkata (Calcutta) change?
No. Neither place uses daylight saving time, so the difference stays 1 hour and 30 minutes all year.
