Time difference
Time difference between Hanoi and Kolkata
Find the best time to schedule a call or meeting.
Kolkata is currently 1 hour 30 minutes behind Hanoi.
Hanoi • GMT+7
8:14 PM
Thursday, Jun 18
Kolkata • GMT+5:30
6:44 PM
Thursday, Jun 18
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Best times to meet
The 9 AM – 5 PM business windows in both cities overlap for 6.5 hours. 10:30 AM–5 PM in Hanoi is 9 AM–3:30 PM in Kolkata. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Hanoi | Kolkata |
|---|---|
| 8 AM | 6:30 AM |
| 12 PM | 10:30 AM |
| 3 PM | 1:30 PM |
| 5 PM | 3:30 PM |
| 9 PM | 7:30 PM |
Daylight saving
The time difference between these two cities stays the same over the next six months — neither zone is changing for daylight saving in that window.
Frequently asked questions
- How many hours ahead is Kolkata than Hanoi?
- Kolkata is 1.5 hours behind Hanoi.
- What time is 9 AM in Hanoi in Kolkata?
- 9:00 AM in Hanoi is 7:30 AM in Kolkata.
- Do Hanoi and Kolkata observe daylight saving?
- The time difference between these two cities stays the same over the next six months — neither zone is changing for daylight saving in that window.
- When is the best time to call Kolkata from Hanoi?
- Aim for 10:30 AM–5 PM in Hanoi, which is 9 AM–3:30 PM in Kolkata.