Busan ↔ San Francisco
Best Time to Call
Excellent overlap! The best window to call is between 9:00 and 10:00 (Busan time).
Sync Busan and San Francisco easily. Busan is 17 hours ahead of San Francisco. Excellent overlap! The best window to call is between 9:00 and 10:00 (Busan 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
15:44 GMT+9
Working
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New York City
01:44 EST
Sleeping
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London
06:44 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.
Busan Business Pulse
- Culture Dynamic, industrial, and more direct than Seoul. A major maritime and trade hub.
- Lunch Break 12:00 PM - 1:00 PM.
- Pro Tip Best times for calls are 10:00 AM to 11:30 AM. Professionals in Busan are known for being more direct and expressive than in Seoul. The maritime and logistics sectors are very active. Hierarchy and punctuality are still strictly followed. Avoid the 12-1 PM lunch hour.
San Francisco Business Pulse
- Culture Innovation-focused and casual. Values disruption, speed, and technical excellence.
- Lunch Break 12:30 PM - 1:30 PM.
- Pro Tip Best reached between 10:00 AM and 4:00 PM. Expect a casual, tech-first vibe—informal language and dress are the norm. However, technical competence and speed are non-negotiable. Many in the Bay Area work non-traditional hours, but standard business times remain the safest bet.
Quick Comparison
| Feature | Busan | San Francisco |
|---|---|---|
| Timezone | Asia/Seoul | America/Los_Angeles |
| Country | South Korea | USA |
| Coordinates | 35.18, 129.08 | 37.77, -122.42 |
| Population | 3,411,000 | 3,318,000 |