Hanoi ↔ Sydney
Best Time to Call
Excellent overlap! The best window to call is between 9:00 and 13:00 (Hanoi time).
Sync Hanoi and Sydney easily. Hanoi is 4 hours behind Sydney. Excellent overlap! The best window to call is between 9:00 and 13:00 (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
15:37 GMT+9
Working
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New York City
01:37 EST
Sleeping
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London
06:37 GMT
Sleeping
Synchronization Context
A 4 hours gap allows for a manageable shared window, typically in the morning or late afternoon. It requires some scheduling but supports daily synchronization.
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.
Sydney Business Pulse
- Culture Relatively relaxed but professional. Early starts are common to maximize daylight.
- Lunch Break 12:00 PM - 1:00 PM.
- Pro Tip Due to the significant time difference with Europe and the US, early mornings (8:30 AM - 10:00 AM) are often dedicated to international syncs. For domestic calls, late mornings are best. Be mindful that many Australians start and end their day earlier than their Northern Hemisphere counterparts.
Quick Comparison
| Feature | Hanoi | Sydney |
|---|---|---|
| Timezone | Asia/Bangkok | Australia/Sydney |
| Country | Vietnam | Australia |
| Coordinates | 21.03, 105.85 | -33.87, 151.21 |
| Population | 5,200,000 | 5,121,000 |