Kolkata to Hanoi Time Difference
🇮🇳 Kolkata is currently 1.5 hours ahead of 🇻🇳 Hanoi.
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Atin 🇮🇳 Kolkata→it will be—in 🇻🇳 Hanoi
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Difference
+1.5h
Business overlap
7h
Distance
1,811 km
Approx. flight
2.1h
Hour-by-Hour: Kolkata to Hanoi
| 🇮🇳 Kolkata | 🇻🇳 Hanoi | Note |
|---|---|---|
| 12:00 AM | 1:30 AM | |
| 1:00 AM | 2:30 AM | |
| 2:00 AM | 3:30 AM | |
| 3:00 AM | 4:30 AM | |
| 4:00 AM | 5:30 AM | |
| 5:00 AM | 6:30 AM | |
| 6:00 AM | 7:30 AM | |
| 7:00 AM | 8:30 AM | |
| 8:00 AM | 9:30 AM | |
| 9:00 AM | 10:30 AM | |
| 10:00 AM | 11:30 AM | |
| 11:00 AM | 12:30 PM | |
| 12:00 PM | 1:30 PM | |
| 1:00 PM | 2:30 PM | |
| 2:00 PM | 3:30 PM | |
| 3:00 PM | 4:30 PM | |
| 4:00 PM | 5:30 PM | |
| 5:00 PM | 6:30 PM | |
| 6:00 PM | 7:30 PM | |
| 7:00 PM | 8:30 PM | |
| 8:00 PM | 9:30 PM | |
| 9:00 PM | 10:30 PM | |
| 10:00 PM | 11:30 PM | |
| 11:00 PM | 12:30 AM(next day) | Next day |
Daylight Saving Time (DST)
Neither Kolkata nor Hanoi observes Daylight Saving Time. The time difference is always 1.5 hours ahead.
Best Meeting Times
There are 7 overlapping business hours between Kolkata and Hanoi (9 AM – 6 PM in each city).
🇮🇳 Kolkata
9:00 AM – 4:00 PM
🇻🇳 Hanoi
10:30 AM – 5:30 PM
Frequently Asked Questions
What is the time difference between Kolkata and Hanoi?
The time difference between Kolkata and Hanoi is currently 1.5 hours ahead. Kolkata uses GMT+5:30 (UTC+5:30), while Hanoi uses GMT+7 (UTC+7).
When it's noon in Kolkata, what time is it in Hanoi?
When it's 12:00 PM (noon) in Kolkata, it is 1:30 PM in Hanoi. Use our calculator above to convert any other time.
Does the time difference between Kolkata and Hanoi change?
No. The time difference between Kolkata and Hanoi is always 1.5 hours ahead — neither city observes Daylight Saving Time, so the offset never changes.
What are the best times to schedule a call between Kolkata and Hanoi?
The best time to call is between 9:00 AM and 4:00 PM in Kolkata (which is 10:30 AM – 5:30 PM in Hanoi). This 7-hour window falls within business hours in both cities.
Is Kolkata ahead or behind Hanoi?
Kolkata is currently 1.5 hours behind Hanoi.
What time zone is Kolkata in?
Kolkata is in the Asia/Kolkata time zone, currently using GMT+5:30 (UTC+5:30). Kolkata does not observe Daylight Saving Time.
What time is midnight in Kolkata in Hanoi?
When it is midnight (12:00 AM) in Kolkata, it is 1:30 AM in Hanoi.