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DateAlmanac

What is KST in UTC?

Coordinated Universal Time is 9 hours behind

Korea Standard Time is on UTC+9:00 and Coordinated Universal Time is on UTC+0:00 right now. That gap holds all year, because neither zone observes daylight saving.

Convert a time

UTC — Coordinated Universal Time

8:00 am

UTC, Sat

Time in Seoul
5:29:31 PM
Time in the prime meridian
8:29:31 AM
Difference
−9 h
Next clock change
Neither zone

Daylight saving

Korea Standard Time

No clock changes

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

Coordinated Universal Time

No clock changes

Coordinated Universal Time stays on UTC all year, so its offset from UTC never moves.

KST to UTC conversion table

Every hour of Saturday, November 7, 2026, converted from Korea Standard Time to Coordinated Universal Time. 9 of the 24 hours fall on a different calendar day in the prime meridian, which is marked.

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

Scheduling between the two

There is no overlap between a nine-to-six working day in Seoul and one in the prime meridian — the gap is too wide. A call has to sit early or late for one side. Early morning in Seoul is the usual compromise, since that is late afternoon or evening in the prime meridian.

Coordinated Universal Time (UTC) is used in aviation, computing, and science worldwide. UTC never changes for daylight saving.

Other conversions