Colombo, Sri Lanka
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Asia/ColomboGMT+05:30
Naha, Japan
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Asia/TokyoGMT+09:00
3.5h
Time Difference
5h
Business Hours Overlap
Yes
Good Call Window
Best Times to Call
These times work well for both cities during business hours (9 AM - 5 PM):
9:00 AM in Colombo
12:30 PM in Naha
10:00 AM in Colombo
1:30 PM in Naha
11:00 AM in Colombo
2:30 PM in Naha
12:00 PM in Colombo
3:30 PM in Naha
Hour-by-Hour Time Conversion
| Colombo | Naha | Status |
|---|---|---|
| 12:00 AM | 3:30 AM | |
| 1:00 AM | 4:30 AM | |
| 2:00 AM | 5:30 AM | |
| 3:00 AM | 6:30 AM | |
| 4:00 AM | 7:30 AM | |
| 5:00 AM | 8:30 AM | |
| 6:00 AM | 9:30 AM | Work in Naha |
| 7:00 AM | 10:30 AM | Work in Naha |
| 8:00 AM | 11:30 AM | Work in Naha |
| 9:00 AM | 12:30 PM | Work Hours |
| 10:00 AM | 1:30 PM | Work Hours |
| 11:00 AM | 2:30 PM | Work Hours |
| 12:00 PM | 3:30 PM | Work Hours |
| 1:00 PM | 4:30 PM | Work Hours |
| 2:00 PM | 5:30 PM | Work in Colombo |
| 3:00 PM | 6:30 PM | Work in Colombo |
| 4:00 PM | 7:30 PM | Work in Colombo |
| 5:00 PM | 8:30 PM | |
| 6:00 PM | 9:30 PM | |
| 7:00 PM | 10:30 PM | |
| 8:00 PM | 11:30 PM | |
| 9:00 PM | 12:30 AM | |
| 10:00 PM | 1:30 AM | |
| 11:00 PM | 2:30 AM |
More Time Comparisons
About the Time Difference Between Colombo and Naha
The time difference between Colombo, Sri Lanka and Naha, Japan is 3.5 hours ahead.Colombo operates on the Asia/Colombo timezone (GMT+05:30), while Naha uses Asia/Tokyo (GMT+09:00).
Scheduling Tips
- Business hours overlap: There are 5 hours when both cities are within typical work hours (9 AM - 5 PM).
- Best call times: Schedule calls during the green-highlighted hours in the conversion table above for optimal timing.
- Daylight Saving Time: Remember that the time difference may change during DST transitions. Always verify current times before important meetings.
Frequently Asked Questions
When it's noon in Colombo, what time is it in Naha?
When it's 12:00 PM (noon) in Colombo, it's 4:00 PM in Naha.