Time difference between Greenwich and Ko Samui
Compare the current local time in Greenwich and Ko Samui, 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 Greenwich's 9:00–17:00 business hours overlap with Ko Samui's.
Greenwich working hours
Ko Samui working hours
Overlap (both working)
🇺🇸 Greenwich
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🇹🇭 Ko Samui
How do you schedule across Greenwich and Ko Samui?
Scheduling between Greenwich and Ko Samui is hard. Their standard business hours do not overlap on the same day, with the smallest gap running 3 hours between Ko Samui closing at 17:00 local and Greenwich opening at 09:00 local. Practical bridging slots: an early Greenwich start at 06:00 (catching Ko Samui just at close, 17:00), or a late Ko Samui call at 20:00 (catching Greenwich at opening, 09:00).
What's the quick reference?
| 🇺🇸 Greenwich | 🇹🇭 Ko Samui | In Ko Samui 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 | — | — |