Live Synchronized Time Difference
SeoultoTokyoTime Difference
🇰🇷
Seoul
South Korea (GMT+9)00:10:22UTC+9:00
🇯🇵
Tokyo
Japan (GMT+9)00:10:22UTC+9:00
Direct Distance1,149 km (714 miles)
Estimated Flight Time~1.9 hours
Business Overlap8 overlapping hours (9am–5pm)
Mutual Working Window: 8 Overlapping Hours
Recommended calling window between Seoul and Tokyo
Off-Peak Calling Window
Seoul Time
9:00 AM – 5:00 PM
Tokyo Time
9:00 AM – 5:00 PM
Both locations share 8 overlapping standard business hours (9:00 AM – 5:00 PM). This is the premier window for real-time video conferences, corporate calls, and instant collaboration without outside-hours disruption.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between Seoul and Tokyo.
Work (9am-5pm)ShoulderSleep / Off
| Seoul Time (South Korea) | Tokyo Time (Japan) | Status & Recommendation |
|---|---|---|
| 00:00AM | 00:00AM | ⚪ Outside Work Hours |
| 01:00AM | 01:00AM | ⚪ Outside Work Hours |
| 02:00AM | 02:00AM | ⚪ Outside Work Hours |
| 03:00AM | 03:00AM | ⚪ Outside Work Hours |
| 04:00AM | 04:00AM | ⚪ Outside Work Hours |
| 05:00AM | 05:00AM | ⚪ Outside Work Hours |
| 06:00AM | 06:00AM | ⚪ Outside Work Hours |
| 07:00AM | 07:00AM | ⚪ Outside Work Hours |
| 08:00AM | 08:00AM | ⚪ Outside Work Hours |
| 09:00AM | 09:00AM | 🟢 Ideal Meeting Window |
| 10:00AM | 10:00AM | 🟢 Ideal Meeting Window |
| 11:00AM | 11:00AM | 🟢 Ideal Meeting Window |
| 12:00PM | 12:00PM | 🟢 Ideal Meeting Window |
| 13:00PM | 13:00PM | 🟢 Ideal Meeting Window |
| 14:00PM | 14:00PM | 🟢 Ideal Meeting Window |
| 15:00PM | 15:00PM | 🟢 Ideal Meeting Window |
| 16:00PM | 16:00PM | 🟢 Ideal Meeting Window |
| 17:00PM | 17:00PM | ⚪ Outside Work Hours |
| 18:00PM | 18:00PM | ⚪ Outside Work Hours |
| 19:00PM | 19:00PM | ⚪ Outside Work Hours |
| 20:00PM | 20:00PM | ⚪ Outside Work Hours |
| 21:00PM | 21:00PM | ⚪ Outside Work Hours |
| 22:00PM | 22:00PM | ⚪ Outside Work Hours |
| 23:00PM | 23:00PM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between Seoul and Tokyo?
Tokyo and Seoul are in the same time offset.
What is the best time to schedule a cross-border meeting between Seoul and Tokyo?
There are 8 overlapping standard business hours (09:00 - 17:00) between Seoul and Tokyo. The optimal window is when both parties are in their core working shifts.
Does daylight saving time (DST) affect the time difference between Seoul and Tokyo?
Yes. If either South Korea or Japan observes seasonal Daylight Saving Time transitions, the offset difference shifts by one hour on scheduled transition dates.