The short answer

4pm in Tokyo is 4pm in Korea Standard Time.

Tokyo and Korea Standard Time keep the same time. Both sides are inside the standard 9-to-5 working day, so this is a sociable time for a call in both places.

Tokyo
4pm
Korea Standard Time
4pm
Right now
6:01pmJST · UTC+09:00 · Mon, Jun 22
6:01pmKST · UTC+09:00 · Mon, Jun 22
Read across to convert
Tokyo
JST · UTC+09:00
6:01pm ☾
Korea Standard Time
KST · UTC+09:00
6:01pm ☾
Pinned4pmTokyo=4pmKorea Standard Time
12amMon
12amMon
1am
1am
2am
2am
3am
3am
4am
4am
5am
5am
6am
6am
7am
7am
8am
8am
9am
WORK
9am
WORK
10am
WORK
10am
WORK
11am
WORK
11am
WORK
12pm
WORK
12pm
WORK
1pm
WORK
1pm
WORK
2pm
WORK
2pm
WORK
3pm
WORK
3pm
WORK
PINNED
4pm
WORK
4pm
WORK
5pm
5pm
NOW
6pm
6pm
7pm
7pm
8pm
8pm
9pm
9pm
10pm
10pm
11pm
11pm
daylightnightworking hoursoverlap
Best time to meet
Best for a call
Tokyo
9am–5pm
=
Korea Standard Time
9am–5pm
Popular conversions

Quick reference.

9amTokyo=9amKorea Standard Time
12pmTokyo=12pmKorea Standard Time
3pmTokyo=3pmKorea Standard Time
5pmTokyo=5pmKorea Standard Time
9pmTokyo=9pmKorea Standard Time
In context

What each side covers.

Tokyo
JST · UTC+09:00
6:01pm
Cities on this clock
Korea Standard Time
KST · UTC+09:00
6:01pm
Cities on this clock

Frequently asked

Quick answers about converting between Tokyo and Korea Standard Time. Can't find what you need? Email [email protected].

What is the time difference between Tokyo and Korea Standard Time?
Tokyo and Korea Standard Time are currently on the same time, so there is no difference to convert.
When it's 4pm in Tokyo, what time is it in Korea Standard Time?
4pm in Tokyo is 4pm in Korea Standard Time. Both sides are inside the standard 9-to-5 working day, so this is a sociable time for a call in both places. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Tokyo and Korea Standard Time?
9am–5pm in Tokyo lines up with 9am–5pm in Korea Standard Time — both sides are inside a 9-to-5 working day.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — JST and KST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.