Hanoi ↔ Sao Paulo
Best Time to Call
Decent overlap available between 18:00 and 19:00 (Hanoi time).
Sync Hanoi and Sao Paulo easily. Hanoi is 10 hours ahead of Sao Paulo. Decent overlap available between 18:00 and 19:00 (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
15:43 GMT+9
Working
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New York City
01:43 EST
Sleeping
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London
06:43 GMT
Sleeping
Synchronization Context
Operating on opposite sides of the clock, these cities have virtually no overlapping business hours. Expect a 24-hour turnaround for most communications.
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.
Sao Paulo Business Pulse
- Culture Warm and relationship-oriented. Personal touch and face-to-face (or video) meetings are preferred over emails.
- Lunch Break 12:30 PM - 2:00 PM.
- Pro Tip Mornings can start slowly; the most productive time for calls is between 2:30 PM and 5:00 PM. Avoid scheduling anything critical for Friday afternoon, as many locals begin their weekend travel early. Brazilians value personal warmth; always include a friendly greeting.
Quick Comparison
| Feature | Hanoi | Sao Paulo |
|---|---|---|
| Timezone | Asia/Bangkok | America/Sao_Paulo |
| Country | Vietnam | Brazil |
| Coordinates | 21.03, 105.85 | -23.55, -46.63 |
| Population | 5,200,000 | 22,620,000 |