San Diego ↔ Shanghai
Best Time to Call
Decent overlap available between 16:00 and 19:00 (San Diego time).
Sync San Diego and Shanghai easily. San Diego is 16 hours behind Shanghai. Decent overlap available between 16:00 and 19:00 (San Diego 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
15:42 GMT+9
Working
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New York City
01:42 EST
Sleeping
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London
06:42 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.
San Diego Business Pulse
- Culture Professional, casual, and focused on biotech and innovation.
- Lunch Break 12:30 PM - 1:30 PM.
- Pro Tip Best reached between 10:00 AM and 4:00 PM. Like much of the US West Coast, the culture is casual-professional. Biotech and defense are major industries; expect technical competence to be highly valued. Punctuality is respected, even in a more relaxed atmosphere.
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 | San Diego | Shanghai |
|---|---|---|
| Timezone | America/Los_Angeles | Asia/Shanghai |
| Country | USA | China |
| Coordinates | 32.72, -117.16 | 31.23, 121.47 |
| Population | 1,386,000 | 29,210,000 |