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DateAlmanac

What is KST in JST?

Japan Standard Time is the same time

Korea Standard Time and Japan Standard Time are both on UTC+9:00 right now. That gap holds all year, because both zones change their clocks together.

Time in Seoul
9:03:51 PM
Time in Tokyo
9:03:51 PM
Difference
None
Next clock change
Neither zone

Convert a time

JST — Japan Standard Time

9:00 pm

JST, Fri

Daylight saving

Korea Standard Time

No clock changes

Korea Standard Time stays on KST all year, so its offset from UTC never moves.

Japan Standard Time

No clock changes

Japan Standard Time stays on JST all year, so its offset from UTC never moves.

KST to JST conversion table

Every hour of Friday, September 25, 2026, converted from Korea Standard Time to Japan Standard Time.

12:00 am KST
12:00 am JST
1:00 am KST
1:00 am JST
2:00 am KST
2:00 am JST
3:00 am KST
3:00 am JST
4:00 am KST
4:00 am JST
5:00 am KST
5:00 am JST
6:00 am KST
6:00 am JST
7:00 am KST
7:00 am JST
8:00 am KST
8:00 am JST
9:00 am KST
9:00 am JST
10:00 am KST
10:00 am JST
11:00 am KST
11:00 am JST
12:00 pm KST
12:00 pm JST
1:00 pm KST
1:00 pm JST
2:00 pm KST
2:00 pm JST
3:00 pm KST
3:00 pm JST
4:00 pm KST
4:00 pm JST
5:00 pm KST
5:00 pm JST
6:00 pm KST
6:00 pm JST
7:00 pm KST
7:00 pm JST
8:00 pm KST
8:00 pm JST
9:00 pm KST
9:00 pm JST
10:00 pm KST
10:00 pm JST
11:00 pm KST
11:00 pm JST

Scheduling between the two

Working hours overlap from 9:00 am to 6:00 pm KST, which is 9:00 am to 6:00 pm JST. Anything inside that window falls in the normal working day at both ends.

Other conversions