Hanoi ↔ Kolkata
Best Time to Call
Excellent overlap! The best window to call is between 11:00 and 17:00 (Hanoi time).
Sync Hanoi and Kolkata easily. Hanoi is 1 hour 30 minutes ahead of Kolkata. Excellent overlap! The best window to call is between 11:00 and 17:00 (Hanoi time).
Upcoming Time Change
- New York City clocks forward 1h in 11 days Mar 09
💡 Review recurring meetings scheduled during these dates to avoid sync issues.
Meeting Optimizer
Sync Score
3.3/10
-12h Current Time +12h
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Tokyo
15:38 GMT+9
Working
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New York City
01:38 EST
Sleeping
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London
06:38 GMT
Sleeping
Synchronization Context
With only a 1 hour 30 minutes difference, these cities share a near-total workday overlap. Coordination is seamless, with most business hours aligning perfectly.
Hanoi Business Pulse
- Culture Formal, hierarchical, and relationship-driven. Government presence is strong.
- Lunch Break 12:00 PM - 1:30 PM.
- Pro Tip Best reached between 9:00 AM and 11:30 AM. Business in the capital is more formal and hierarchical than in the south. Relationships with authority and government are often important. Trust must be built through multiple polite interactions and formal introductions.
Kolkata Business Pulse
- Culture Intellectual and heritage-focused. Business often involves longer discussions and consensus.
- Lunch Break 1:30 PM - 2:30 PM.
- Pro Tip Best reached between 11:30 AM and 4:00 PM. Avoid the 1:30 PM - 2:30 PM lunch window. Business culture is intellectual and values detailed discussion; avoid overly aggressive "hard-sell" tactics. Note that the city slows down significantly during major festivals like Durga Puja.
Quick Comparison
| Feature | Hanoi | Kolkata |
|---|---|---|
| Timezone | Asia/Bangkok | Asia/Kolkata |
| Country | Vietnam | India |
| Coordinates | 21.03, 105.85 | 22.57, 88.36 |
| Population | 5,200,000 | 15,333,000 |