KST to MST Converter
South Korea to US Mountain — a 16.0-hour gap with seasonal variation due to daylight saving. Coordination typically centers on trade, investment, and remote team management.
Time Zone Converter
Compare Times
| KST | MST |
|---|---|
| 8:00 AM KST | 4:00 PM MST |
| 9:00 AM KST | 5:00 PM MST |
| 10:00 AM KST | 6:00 PM MST |
| 11:00 AM KST | 7:00 PM MST |
| 12:00 PM KST | 8:00 PM MST |
| 1:00 PM KST | 9:00 PM MST |
| 2:00 PM KST | 10:00 PM MST |
| 3:00 PM KST | 11:00 PM MST |
| 4:00 PM KST | 12:00 AM MST |
| 5:00 PM KST | 1:00 AM MST |
| 6:00 PM KST | 2:00 AM MST |
| 7:00 PM KST | 3:00 AM MST |
| 8:00 PM KST | 4:00 AM MST |
Common Time Conversions
EST · New York →
CST · Chicago →
MST · Denver →
PST · Los Angeles →
AKST · Anchorage →
HST · Honolulu →
UTC · Universal →
GMT · London →
IST · New Delhi →
CET · Paris →
How Time Zone Conversion Works
Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.
MST is 16 hours behind KST (standard time).
Daylight Saving Time: MST observes DST; KST does not. The offset between them shifts by 1 hour twice a year — in spring and autumn — when MST changes its clocks.
Best Meeting Times: KST & MST
KST
20:00–21:00
Korea Time
MST
04:00–05:00
Mountain Time
Recommended time: 20:00 KST / 04:00 MST
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
KST · Korea Time
Standard offset +09:00
Korea Time remains on a constant standard offset for the year.
South Korea does not currently observe DST; temporary DST experiments ended in 1988.
MST · Mountain Time
Standard offset −07:00
- Starts
- Mar 8, 2026 · 02:00 → 03:00
- second_sunday_of_march
- Ends
- Nov 1, 2026 · 02:00 → 01:00
- first_sunday_of_november
- Daylight time
- MDT · −06:00
Most of Arizona stays on MST year-round (does not observe DST). The Navajo Nation within Arizona does observe DST.
Principal Cities
KST — Korea Time
- SeoulSouth Korea
- BusanSouth Korea
- IncheonSouth Korea
- DaeguSouth Korea
MST — Mountain Time
- PhoenixUnited States
- CalgaryCanada
- EdmontonCanada
- DenverUnited States