Seoul and Tokyo Time Zone Planner
Clock in Seoul is 0 hours ahead
Frequently Asked Questions
Is Tokyo ahead of or behind Seoul?
The time difference between Seoul and Tokyo is 0 hours. Seoul observes Asia/Seoul while Tokyo observes Asia/Tokyo.
What hours do Seoul and Tokyo share for work?
Both locations are simultaneously in business hours for 8 hours per day. 09:00 Seoul / 09:00 Tokyo works well for both parties.
Will the offset change due to a DST transition anytime soon?
The 0 hours difference between Seoul and Tokyo is stable — no DST changes expected in the next 7 days.
12:00 PM in Seoul is what time in Tokyo?
At midday in Seoul, clocks in Tokyo show 12:00 PM.
What tools help schedule across Seoul and Tokyo?
Simply drag the slider to your Seoul time — Tokyo and all other locations update in real time. Accuracy is to the minute, DST-aware.
What local holidays should I watch out for in Seoul?
Watch out for Liberation Day in Seoul on August 15 — offices may be closed or understaffed.
How do Seoul and Tokyo relate to UTC?
Seoul follows Asia/Seoul. Tokyo uses Asia/Tokyo. Together they are 0 hours apart.
Quick time conversions: Seoul → Tokyo
Common reference points to help you plan across the time difference.
A 11:00 AM start in Seoul means 11:00 AM for your contact in Tokyo.
Seoul 3:00 PM — what's that in Tokyo?—3:00 PM
1:00 PMin Seoul→1:00 PMin Tokyo
When Seoul clocks show 5:00 PM, Tokyo reads 5:00 PM.
6:00 AMin Seoul→6:00 AMin Tokyo
If I call at 4:00 PM from Seoul, what time is it in Tokyo?—4:00 PM
7:00 PMin Seoul→7:00 PMin Tokyo
Seoul ↔ Tokyo
8h of business hours overlap daily (09:00–17:00)· Showing afternoon hours (12:00–20:00)
Seoul
Tokyo
Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.