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KST to MST Time Converter

MST is 16 hours behind KST right now. 9:00 AM in KST is 5:00 PM in MST (the day before).

Time now: KST and MST

🌐 Korea Standard Time (KST)8:59 AMTuesday, November 10 · UTC+09:00
🌐 Mountain Time (US & Canada)4:59 PMMonday, November 9 · UTC-07:00

MST is 16 hours behind KST right now. The gap is not fixed: it is 16 hours at some times of the year and 15 hours at others, because at least one of them changes its clocks for daylight saving time.

KST to MST conversion table

Every hour of the day, using today's time difference.

KSTMST
12:00 AM8:00 AMprevious day
1:00 AM9:00 AMprevious day
2:00 AM10:00 AMprevious day
3:00 AM11:00 AMprevious day
4:00 AM12:00 PMprevious day
5:00 AM1:00 PMprevious day
6:00 AM2:00 PMprevious day
7:00 AM3:00 PMprevious day
8:00 AM4:00 PMprevious day
9:00 AM5:00 PMprevious day
10:00 AM6:00 PMprevious day
11:00 AM7:00 PMprevious day
12:00 PM8:00 PMprevious day
1:00 PM9:00 PMprevious day
2:00 PM10:00 PMprevious day
3:00 PM11:00 PMprevious day
4:00 PM12:00 AM
5:00 PM1:00 AM
6:00 PM2:00 AM
7:00 PM3:00 AM
8:00 PM4:00 AM
9:00 PM5:00 AM
10:00 PM6:00 AM
11:00 PM7:00 AM

Best time to meet between KST and MST

Working hours overlap (9 AM – 6 PM in both places):

  • 9:00 AM – 10:00 AM KST = 5:00 PM – 6:00 PM MST

The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.

Does the time difference between KST and MST change?

Yes. Right now MST is 16 hours behind KST. These are the dates in the next 12 months when the gap changes:

  • Sunday, 14 March 2027: MST moves its clocks forward. MST is 15 hours behind KST from then (it was 16 hours before).
  • Sunday, 7 November 2027: MST moves its clocks back. MST is 16 hours behind KST from then (it was 15 hours before).

Office hours in each other's time

  • 9 AM to 6 PM in KST is 5:00 PM (previous day) to 2:00 AM in MST.
  • 9 AM to 6 PM in MST is 1:00 AM (next day) to 10:00 AM (next day) in KST.

Based on today's clock settings.

Frequently asked questions

What is the time difference between KST and MST?

MST is 16 hours behind KST right now. The gap is not fixed: it is 16 hours at some times of the year and 15 hours at others, because at least one of them changes its clocks for daylight saving time.

How do I convert KST to MST?

Subtract 16 hours from the KST time to get the MST time (at today's difference). 9:00 AM in KST is 5:00 PM in MST (the day before). Or use the converter above and pick any date and time.

What is the current time in MST?

It is 4:59 PM in MST on Monday, November 9 (the converter above shows it live). At the same moment it is 8:59 AM in KST.

Does the time difference between KST and MST change during the year?

Yes. Right now MST is 16 hours behind KST. Over the next 12 months the gap changes 2 times: Sunday, 14 March 2027: MST moves its clocks forward. MST is 15 hours behind KST from then (it was 16 hours before). Sunday, 7 November 2027: MST moves its clocks back. MST is 16 hours behind KST from then (it was 15 hours before).

What is the best time for a meeting between KST and MST?

Between 9 AM and 6 PM in both places you can meet at 9:00 AM – 10:00 AM KST = 5:00 PM – 6:00 PM MST. Check the overlap section on this page for every option.

What does MST mean?

Mountain Time is MST (UTC-07:00) in winter and MDT (UTC-06:00) in summer. Arizona stays on MST all year.

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