Time Difference Between Osan and Tokyo
Tokyo is the same time as Osan.
South Korea
Osan
Asia/Seoul · UTC+9
Japan
Tokyo
Asia/Tokyo · UTC+9
Best Times to Meet
Hours where standard working time (9 AM – 6 PM) overlaps in both Osan and Tokyo.
Osan
9:00 AM
Tokyo
9:00 AM
Osan
10:00 AM
Tokyo
10:00 AM
Osan
11:00 AM
Tokyo
11:00 AM
Osan
12:00 PM
Tokyo
12:00 PM
Osan
1:00 PM
Tokyo
1:00 PM
Osan
2:00 PM
Tokyo
2:00 PM
Osan
3:00 PM
Tokyo
3:00 PM
Osan
4:00 PM
Tokyo
4:00 PM
Osan
5:00 PM
Tokyo
5:00 PM
Osan to Tokyo — 24-Hour Conversion
Each row shows the equivalent local time in Tokyo for an hour in Osan. Working-hours rows (9–18) are highlighted.
| Osan | Tokyo | Match |
|---|---|---|
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| Best for meetings | ||
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| Best for meetings | ||
| Best for meetings | ||
| Best for meetings | ||
| Best for meetings | ||
| Best for meetings | ||
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| Off hours | ||
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Frequently Asked Questions
What is the time difference between Osan and Tokyo?
Tokyo, Japan (UTC+9) is same time as Osan, South Korea (UTC+9).
What is the best time to schedule a meeting between Osan and Tokyo?
The best meeting times overlap when both cities are within standard working hours (9 AM – 6 PM). The full hour-by-hour table on this page lists every overlap window.
Does daylight saving time change the difference between Osan and Tokyo?
Yes — when one city observes daylight saving time and the other does not, the gap shifts by an hour. The conversion table on this page reflects the current offset, including any active DST.
When it is 9 AM in Osan, what time is it in Tokyo?
Use the conversion table on this page — every hour in Osan is mapped to its equivalent local time in Tokyo, including day shift markers when the date differs.