San Francisco ↔ Tehran
Best Time to Call
These cities have challenging overlap; use our slider to find a slot.
Sync San Francisco and Tehran easily. San Francisco is 11 hours 30 minutes behind Tehran. These cities have challenging overlap; use our slider to find a slot.
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
15:36 GMT+9
Working
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New York City
01:36 EST
Sleeping
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London
06:36 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 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.
Tehran Business Pulse
- Culture Relationship-heavy and formal. Respect for hierarchy is paramount.
- Lunch Break 1:00 PM - 2:00 PM.
- Pro Tip The work week is Saturday to Wednesday. Thursday is often a half-day. Call between 9:00 AM and 12:00 PM. Iranian business culture is very formal and involves "Taarof" (a complex system of etiquette); be patient, polite, and avoid rushing into business without proper greetings.
Quick Comparison
| Feature | San Francisco | Tehran |
|---|---|---|
| Timezone | America/Los_Angeles | Asia/Tehran |
| Country | USA | Iran |
| Coordinates | 37.77, -122.42 | 35.69, 51.39 |
| Population | 3,318,000 | 9,500,000 |