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DateAlmanac

What is JST in KST?

Korea Standard Time is the same time

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

Time in Tokyo
9:03:52 PM
Time in Seoul
9:03:52 PM
Difference
None
Next clock change
Neither zone

Convert a time

KST — Korea Standard Time

9:00 pm

KST, Fri

Daylight saving

Japan Standard Time

No clock changes

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

Korea Standard Time

No clock changes

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

JST to KST conversion table

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

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

Scheduling between the two

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

Other conversions