Colombo ↔ Shanghai
Best Time to Call
Excellent overlap! The best window to call is between 9:00 and 15:00 (Colombo time).
Sync Colombo and Shanghai easily. Colombo is 2 hours 30 minutes behind Shanghai. Excellent overlap! The best window to call is between 9:00 and 15:00 (Colombo 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
15:33 GMT+9
Working
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New York City
01:33 EST
Sleeping
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London
06:33 GMT
Sleeping
Synchronization Context
A 2 hours 30 minutes gap allows for a manageable shared window, typically in the morning or late afternoon. It requires some scheduling but supports daily synchronization.
Colombo Business Pulse
- Culture Professional and hierarchical. Values personal rapport and education.
- Lunch Break 1:00 PM - 2:00 PM.
- Pro Tip Best call window is 10:00 AM to 12:00 PM. Sri Lankans value education and professional titles. Business culture is relational; spend time on polite introductions. Punctuality is appreciated. Be aware of potential power disruptions and have a backup communication plan like WhatsApp.
Shanghai Business Pulse
- Culture Highly competitive and fast-paced. Business is often conducted with a mix of modern efficiency and traditional "Guanxi" (relationships).
- Lunch Break 12:00 PM - 1:00 PM (Nap time is common).
- Pro Tip Respect the 12-1 PM lunch and rest window; lights are often dimmed in offices for naps. The best time to call is between 2:00 PM and 4:30 PM. Avoid calling during major public holidays like Golden Week or Lunar New Year, as business comes to a complete halt.
Quick Comparison
| Feature | Colombo | Shanghai |
|---|---|---|
| Timezone | Asia/Colombo | Asia/Shanghai |
| Country | Sri Lanka | China |
| Coordinates | 6.93, 79.86 | 31.23, 121.47 |
| Population | 753,000 | 29,210,000 |