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DateAlmanac

What is MST in KST?

Korea Standard Time is 16 hours ahead

Mountain Time is on UTC−7:00 and Korea Standard Time is on UTC+9:00 right now. The gap changes during the year — see below.

Convert a time

KST — Korea Standard Time

5:00 pm

KST, Sat

Time in Denver
1:29:36 AM
Time in Seoul
5:29:36 PM
Difference
+16 h
Next clock change
March 14, 2027

When the difference changes

Mountain Time and Korea Standard Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. Now – March 14, 2027Korea Standard Time is 16 hours ahead
  2. March 14, 2027 – November 7, 2027Korea Standard Time is 15 hours ahead
  3. November 7, 2027 – onwardsKorea Standard Time is 16 hours ahead

Periods shorter than a day are not listed. Each zone changes at its own local time, so on a date when both move there are a few hours when the gap is briefly something else.

Daylight saving

Mountain Time

Sunday, March 14, 2027

Clocks go forward one hour — 2:00 am becomes 3:00 am local time, and the zone is on MDT after that.

Korea Standard Time

No clock changes

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

MST to KST conversion table

Every hour of Saturday, November 7, 2026, converted from Mountain Time to Korea Standard Time. 16 of the 24 hours fall on a different calendar day in Seoul, which is marked.

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

Scheduling between the two

Working hours overlap from 5:00 pm to 6:00 pm MST, which is 9:00 am to 10:00 am KST. Anything inside that window falls in the normal working day at both ends.

Mountain Time (MST) is used in Salt Lake City, Albuquerque and Calgary. Arizona keeps MST all year and does not follow MDT.

Other conversions