Time difference
San Francisco to Tehran Time Difference
Tehran is 10 hours and 30 minutes ahead of San Francisco — when it's 12:00 PM in San Francisco, it's 10:30 PM in Tehran. (San Francisco (America/Los_Angeles, PDT); Tehran (Asia/Tehran, IRST).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Tehran is 10 hours and 30 minutes ahead of San Francisco. Standard 9 AM–5 PM business hours in San Francisco and Tehran do not overlap, so a live call needs one side outside normal hours. Clocks change on November 1, 2026, which briefly shifts the gap between San Francisco and Tehran — the converter on this page always reflects the correct offset for the date you pick.
- When it's 9:00 AM in San Francisco, it's 7:30 PM in Tehran.
- When it's 9:00 AM in Tehran, it's 10:30 PM the previous day in San Francisco.
Tehran is currently 10 hours and 30 minutes ahead of San Francisco.
Interactive converter
12:00PM
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Best times to meet
Standard 9 AM – 5 PM hours in San Francisco and Tehran do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in San Francisco, or a 6–8 PM meeting in Tehran.
Quick conversion table
| San Francisco | Tehran |
|---|---|
| 12 AM | 10:30 AM |
| 1 AM | 11:30 AM |
| 2 AM | 12:30 PM |
| 3 AM | 1:30 PM |
| 4 AM | 2:30 PM |
| 5 AM | 3:30 PM |
| 6 AM | 4:30 PM |
| 7 AM | 5:30 PM |
| 8 AM | 6:30 PM |
| 9 AM | 7:30 PM |
| 10 AM | 8:30 PM |
| 11 AM | 9:30 PM |
| 12 PM | 10:30 PM |
| 1 PM | 11:30 PM |
| 2 PM | 12:30 AM (next day) |
| 3 PM | 1:30 AM (next day) |
| 4 PM | 2:30 AM (next day) |
| 5 PM | 3:30 AM (next day) |
| 6 PM | 4:30 AM (next day) |
| 7 PM | 5:30 AM (next day) |
| 8 PM | 6:30 AM (next day) |
| 9 PM | 7:30 AM (next day) |
| 10 PM | 8:30 AM (next day) |
| 11 PM | 9:30 AM (next day) |
Daylight saving
On November 1, 2026, San Francisco shifts for daylight saving. After that, Tehran will be 11 hours and 30 minutes ahead of San Francisco (currently 10 hours and 30 minutes ahead of San Francisco). The converter and the tables above always reflect the correct offset for the date you pick.
- San Francisco is currently observing daylight saving time.
- Tehran does not observe daylight saving time.
Frequently asked questions
- Is Tehran ahead of or behind San Francisco?
- Tehran is 10 hours and 30 minutes ahead of San Francisco.
- How many hours ahead of San Francisco is Tehran?
- Tehran is 10 hours and 30 minutes ahead of San Francisco.
- What time is 9 AM in San Francisco in Tehran?
- 9:00 AM in San Francisco is 7:30 PM in Tehran.
- What time is noon in San Francisco in Tehran?
- 12:00 PM in San Francisco is 10:30 PM in Tehran.
- What time is 5 PM in San Francisco in Tehran?
- 5:00 PM in San Francisco is 3:30 AM the next day in Tehran. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in San Francisco in Tehran?
- 3:00 PM in San Francisco is 1:30 AM the next day in Tehran.
- Is San Francisco currently observing daylight saving time?
- San Francisco is currently observing daylight saving time (summer time).
- Is Tehran currently observing daylight saving time?
- Tehran does not observe daylight saving time — its UTC offset stays the same all year.
- Do San Francisco and Tehran observe daylight saving?
- On November 1, 2026, San Francisco shifts for daylight saving. After that, Tehran will be 11 hours and 30 minutes ahead of San Francisco (currently 10 hours and 30 minutes ahead of San Francisco). The converter and the tables above always reflect the correct offset for the date you pick.
- When is the best time to call Tehran from San Francisco?
- San Francisco and Tehran business hours don't overlap. The closest options are early mornings in San Francisco or late evenings, when one side stretches outside 9–5.
- When is the best time to call San Francisco from Tehran?
- Tehran and San Francisco business hours don't overlap. The closest options are early mornings in Tehran or late evenings, when one side stretches outside 9–5.
- San Francisco (PDT) to Tehran (IRST) — how do I convert quickly?
- Add 10 hours and 30 minutes to San Francisco local time to get Tehran local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
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