Seoul
Denver
Convert KST to MST
Korea Standard Time to Mountain Standard Time — Denver is 15 hours behind Seoul
Quick Facts
Time Difference
-15 hours
KST Full Name
Korea Standard Time
MST Full Name
Mountain Standard Time
KST to MST Conversion Table
Related Conversions
About KST and MST Time Zones
KST (Korea Standard Time) is UTC+9 and covers cities like Seoul, Busan, Incheon. MST (Mountain Standard Time) is UTC-7 and covers cities like Denver, Phoenix, Salt Lake City.
When it's 12:00 PM (noon) in Seoul (KST), it's 9:00 PM in Denver (MST). The time difference between KST and MST is 15 hours — Denver is behind Seoul.
With a 16-hour gap, scheduling overlap is very limited. Early morning in Seoul (6–8 AM) corresponds to evening or late night in Denver.
Daylight Saving Time
MST observes Daylight Saving Time and becomes MDT (Mountain Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC-6.
During DST transitions, the time difference between KST and MST may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Seoul and Denver with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between KST and MST?
Denver (MST) is 15 hours behind Seoul (KST). The offset is -15 hours.
Is MST ahead or behind KST?
MST is 15 hours behind KST. KST is UTC+9 and MST is UTC-6.
When it's 12:00 PM in Seoul, what time is it in Denver?
When it's 12:00 PM (noon) in Seoul (KST), it's 9:00 PM in Denver (MST).
When it's 5:00 PM in Seoul, what time is it in Denver?
When it's 5:00 PM in Seoul (KST), it's 2:00 AM in Denver (MST).
Does MST change for Daylight Saving Time?
Yes. MST (Mountain Standard Time, UTC-7) becomes MDT (Mountain Daylight Time, UTC-6) in summer, shifting clocks forward 1 hour.