The short answer

Mountain Standard Time is 15 hours behind Pyongyang.

Mountain Standard Time
11:19:50pm
MDT · UTC-06:00 · Sun, Jun 21
Pyongyang
2:19:50pm
KST · UTC+09:00 · Mon, Jun 22
Read across to convert
Mountain Standard Time
MDT · UTC-06:00
11:19pm ☾
Pyongyang
KST · UTC+09:00
2:19pm ☀
Click any row to pin that hour across both zones.
12amSun
3pm
WORK
1am
4pm
WORK
2am
5pm
3am
6pm
4am
7pm
5am
8pm
6am
9pm
7am
10pm
8am
11pm
9am
WORK
12amMon ·+1d
10am
WORK
1amMon ·+1d
11am
WORK
2amMon ·+1d
12pm
WORK
3amMon ·+1d
1pm
WORK
4amMon ·+1d
2pm
WORK
5amMon ·+1d
3pm
WORK
6amMon ·+1d
4pm
WORK
7amMon ·+1d
5pm
8amMon ·+1d
6pm
9amMon ·+1d
WORK
7pm
10amMon ·+1d
WORK
8pm
11amMon ·+1d
WORK
9pm
12pmMon ·+1d
WORK
10pm
1pmMon ·+1d
WORK
NOW
11pm
2pmMon ·+1d
WORK
daylightnightworking hoursoverlap
Best time to meet
Closest workable window
Just outside the working window — early on one side, late on the other.
Mountain Standard Time
4pm–7pm
=
Pyongyang
7am–10am
next day
Popular conversions

Quick reference.

9amMountain Standard Time=12amPyongyang · next day
12pmMountain Standard Time=3amPyongyang · next day
3pmMountain Standard Time=6amPyongyang · next day
5pmMountain Standard Time=8amPyongyang · next day
9pmMountain Standard Time=12pmPyongyang · next day
In context

What each side covers.

Mountain Standard Time
MDT · UTC-06:00
11:19pm
Cities on this clock
Pyongyang
KST · UTC+09:00
2:19pm
Cities on this clock

Frequently asked

Quick answers about converting between Mountain Standard Time and Pyongyang. Can't find what you need? Email [email protected].

What is the time difference between Mountain Standard Time and Pyongyang?
Mountain Standard Time is 15 hours behind Pyongyang right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 9am in Mountain Standard Time, what time is it in Pyongyang?
9am in Mountain Standard Time is 12am in Pyongyang on the next day. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
What's the best time for a call between Mountain Standard Time and Pyongyang?
There's no comfortable 9-to-5 overlap between Mountain Standard Time and Pyongyang — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — MDT and KST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.