Time difference between Ko Samui and San Francisco
Compare the current local time in Ko Samui and San Francisco, see when your working hours overlap, and convert any specific hour between the two timezones.
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How do I convert a specific time?
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What's the working-hours overlap?
When Ko Samui's 9:00–17:00 business hours overlap with San Francisco's.
Ko Samui working hours
San Francisco working hours
Overlap (both working)
🇹🇭 Ko Samui
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🇺🇸 San Francisco
How do you schedule across Ko Samui and San Francisco?
Scheduling between Ko Samui and San Francisco is hard. Their standard business hours do not overlap on the same day, with the smallest gap running 2 hours between San Francisco closing at 17:00 local and Ko Samui opening at 09:00 local. Practical bridging slots: an early Ko Samui start at 07:00 (catching San Francisco just at close, 17:00), or a late San Francisco call at 19:00 (catching Ko Samui at opening, 09:00).
What's the quick reference?
| 🇹🇭 Ko Samui | 🇺🇸 San Francisco | In San Francisco it's… |
|---|---|---|
| 06:00 — Early morning | — | — |
| 09:00 — Start of work | — | — |
| 12:00 — Lunchtime | — | — |
| 15:00 — Mid-afternoon | — | — |
| 17:00 — End of work | — | — |
| 20:00 — Evening | — | — |