MST to Seoul Time Converter
KST is 16 hours ahead of MST. 9:00 AM MST = 1:00 AM KST (next day).
KST is 16 hours ahead of MST at the moment. To convert MST to Seoul Time, add 16 hours to the MST time: 9:00 AM MST = 1:00 AM KST (next day).
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. Seoul Time (Seoul time) is used in Seoul, South Korea.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Seoul Time time conversion table
MST to Seoul Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Seoul Time | Day |
|---|---|---|
| 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 | night |
| 7:00 AM MST | 11:00 PM KST | night |
| 8:00 AM MST | 12:00 AM KST | next day |
| 9:00 AM MST | 1:00 AM KST | next day |
| 10:00 AM MST | 2:00 AM KST | next day |
| 11:00 AM MST | 3:00 AM KST | next day |
| 12:00 PM MST | 4:00 AM KST | next day |
| 1:00 PM MST | 5:00 AM KST | next day |
| 2:00 PM MST | 6:00 AM KST | next day |
| 3:00 PM MST | 7:00 AM KST | next day |
| 4:00 PM MST | 8:00 AM KST | next day |
| 5:00 PM MST | 9:00 AM KST | next day |
| 6:00 PM MST | 10:00 AM KST | next day |
| 7:00 PM MST | 11:00 AM KST | next day |
| 8:00 PM MST | 12:00 PM KST | next day |
| 9:00 PM MST | 1:00 PM KST | next day |
| 10:00 PM MST | 2:00 PM KST | next day |
| 11:00 PM MST | 3:00 PM KST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert MST to Seoul Time
Add 16 hours to the MST time to get Seoul Time.
Example: 9:00 AM MST = 1:00 AM KST (next day).
Across midnight: 10:00 PM MST = 2:00 PM KST (next day). The date changes, so always check the day as well as the hour.
Time difference between MST and Seoul Time
The time difference between MST and Seoul Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: Seoul Time is 16 hours ahead of MST.
- 8 Mar 2026 – 31 Oct 2026: Seoul Time is 15 hours ahead of MST.
- 1 Nov 2026 – 30 Dec 2026: Seoul Time is 16 hours ahead of MST.
MST and Seoul Time during daylight saving time
- MST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from MST (UTC−7) to MDT (UTC−6).
- Seoul Time does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between MST and Seoul Time
MST and Seoul Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 3:00 PM MST, which is 7:00 AM KST.
MST to Seoul Time FAQ
What is the time difference between MST and Seoul Time?
Right now KST is 16 hours ahead of MST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM MST in Seoul Time?
9:00 AM MST is 1:00 AM KST (next day).
What is 12 PM (noon) MST in Seoul Time?
12:00 PM MST is 4:00 AM KST (next day).
Is Seoul Time ahead of or behind MST?
KST is 16 hours ahead of MST, so it is later in Seoul Time than in MST.
Does MST change for daylight saving time?
Yes. MST next changes on 14 Mar 2027, when clocks go forward one hour from MST to MDT.
Does Seoul Time change for daylight saving time?
No. Seoul Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between MST and Seoul Time?
MST and Seoul Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 3:00 PM MST, which is 7:00 AM KST.
Is MT the same as MST?
MST is the winter (standard) name of Mountain Time (MT). From March to November the same clocks are called MDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Seoul Time to MST
Convert MST to other time zones
Convert other time zones to Seoul Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.