The short answer
9pm in Eastern European Time is 12pm in Mountain Standard Time.
Eastern European Time is 9 hours ahead of Mountain Standard Time. It falls outside the 9-to-5 in Eastern European Time but lands inside working hours in Mountain Standard Time.
Eastern European Time☾
9pm
Mountain Standard Time☀
12pm
Right now
10:39amEEST · UTC+03:00 · Mon, Jun 22
1:39amMDT · UTC-06:00 · Mon, Jun 22
Read across to convert
Eastern European Time
EEST · UTC+03:00
Mountain Standard Time
MDT · UTC-06:00
Pinned9pmEastern European Time=12pmMountain Standard Time
12amMon
3pmSun ·−1d
WORK1am
4pmSun ·−1d
WORK2am
5pmSun ·−1d
3am
6pmSun ·−1d
4am
7pmSun ·−1d
5am
8pmSun ·−1d
6am
9pmSun ·−1d
7am
10pmSun ·−1d
8am
11pmSun ·−1d
9am
WORK12amMon
NOW
10am
WORK1am
11am
WORK2am
12pm
WORK3am
1pm
WORK4am
2pm
WORK5am
3pm
WORK6am
4pm
WORK7am
5pm
8am
6pm
9am
WORK7pm
10am
WORK8pm
11am
WORKPINNED
9pm
12pm
WORK10pm
1pm
WORK11pm
2pm
WORKdaylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Eastern European Time
4pm–7pm
Mountain Standard Time
7am–10am
Popular conversions
Quick reference.
9amEastern European Time=12amMountain Standard Time
12pmEastern European Time=3amMountain Standard Time
3pmEastern European Time=6amMountain Standard Time
5pmEastern European Time=8amMountain Standard Time
9pmEastern European Time=12pmMountain Standard Time
In context
What each side covers.
Eastern European Time
10:39amEEST · UTC+03:00
Cities on this clock
Mountain Standard Time
1:39amMDT · UTC-06:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
12:40am
India Standard Time
1:10pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
3:40am
Central European Time
9:40am
Eastern Time to Central Europe6 hours behind
India Standard Time
1:10pm
Eastern Standard Time
3:40am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
8:40am
India Standard Time
1:10pm
London to India4 hours 30 minutes behind
Pacific Standard Time
12:40am
Eastern Standard Time
3:40am
Pacific to Eastern Time3 hours behind
Central European Time
9:40am
India Standard Time
1:10pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Eastern European Time and Mountain Standard Time. Can't find what you need? Email [email protected].
- What is the time difference between Eastern European Time and Mountain Standard Time?
- Eastern European Time is 9 hours ahead of Mountain Standard Time 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 9pm in Eastern European Time, what time is it in Mountain Standard Time?
- 9pm in Eastern European Time is 12pm in Mountain Standard Time. It falls outside the 9-to-5 in Eastern European Time but lands inside working hours in Mountain Standard Time. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Eastern European Time and Mountain Standard Time?
- There's no comfortable 9-to-5 overlap between Eastern European Time and Mountain Standard Time — 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 — EEST and MDT — 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.