Seoul to Tokyo Time
KST to JST Converter — 9 AM KST is 9:00 AM JST
Seoul and Tokyo are in the same time zone. Convert any time between Seoul (KST) and Tokyo (JST) instantly.
Seoul
South Korea
Tokyo
Japan
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Time Zone Comparison
Seoul to Tokyo Time Conversion Table
| Seoul (KST) | Tokyo (JST) |
|---|---|
| 12:00 AM | 12:00 AM |
| 2:00 AM | 2:00 AM |
| 4:00 AM | 4:00 AM |
| 6:00 AM | 6:00 AM |
| 8:00 AM | 8:00 AM |
| 10:00 AM | 10:00 AM |
| 12:00 PM | 12:00 PM |
| 2:00 PM | 2:00 PM |
| 4:00 PM | 4:00 PM |
| 6:00 PM | 6:00 PM |
| 8:00 PM | 8:00 PM |
| 10:00 PM | 10:00 PM |
Seoul & Tokyo — Business & Scheduling Guide
Seoul (South Korea) is a technology-driven economy known for rapid innovation, with key industries in semiconductors, automotive, shipbuilding, and K-content. Tokyo (Japan) is the world's third-largest economy, known for automotive, electronics, robotics, and precision instruments. With a zero time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Seoul and Tokyo
Since Seoul and Tokyo share the same UTC offset, scheduling meetings is straightforward — any time that works in one city works in the other. South Korean work culture is fast-paced with typical hours of 9 AM–6 PM, though recent reforms have reduced maximum weekly hours. Japanese business culture places high value on respect and hierarchy, with typical hours of 9 AM–6 PM. Keep in mind that if one city observes Daylight Saving Time and the other doesn't, the effective difference can shift by 1 hour during parts of the year.
Daylight Saving Time Considerations
Neither Seoul nor Tokyo observes Daylight Saving Time — Seoul stays on KST and Tokyo stays on JST year-round. This makes scheduling between these two cities simpler, as the time difference remains constant throughout the year with no DST surprises.
KST to JST — Quick Reference
KST (KST) stands for the timezone used in Seoul, South Korea (UTC+9). JST (JST) is the timezone used in Tokyo, Japan (UTC+9). Seoul and Tokyo are in the same time zone.
To convert KST to JST, both zones are at the same time. For example, KST 9:00 AM = JST 9:00 AM.
Key Facts
- •Time difference: Seoul and Tokyo share the same standard UTC offset.
- •Daylight Saving Time: Seoul does not observe DST (KST). Tokyo does not observe DST (JST).
- •Regions: Seoul is located in South Korea and uses the KST time zone. Tokyo is located in Japan and uses the JST time zone.
- •Best time to call: The best time to call between Seoul and Tokyo is 9:00 AM to 4:00 PM in Seoul time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between Seoul and Tokyo?
Seoul and Tokyo are in the same time zone.
What time is it in Tokyo when it's 9 AM in Seoul?
When it's 9:00 AM in Seoul, it is 9:00 AM in Tokyo.
What time is 9 PM KST in JST?
9 PM KST (Seoul time) is 9:00 PM JST (Tokyo time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Seoul and Tokyo?
The best time to schedule a meeting is between 9:00 AM to 4:00 PM in Seoul time, when both cities are within standard working hours (9 AM – 5 PM). This gives you the maximum overlap window for real-time collaboration.
How do I convert KST to JST?
KST (KST) is the timezone for Seoul, South Korea (UTC+9). JST (JST) is the timezone for Tokyo, Japan (UTC+9). Seoul and Tokyo are in the same time zone. Quick examples: 9 AM KST = 9:00 AM JST, 12 PM KST = 12:00 PM JST, 3 PM KST = 3:00 PM JST, 6 PM KST = 6:00 PM JST.
Is Seoul ahead of or behind Tokyo?
Seoul and Tokyo are in the same UTC offset — neither is ahead or behind.
Does Seoul or Tokyo change clocks for Daylight Saving Time?
No, Seoul does not observe DST — it stays on KST year-round. Tokyo does not observe DST — it stays on JST year-round.
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