DateAlmanac

What is MST in EET?

Eastern European Time is 9 hours ahead

Mountain Time is on UTC−6:00 and Eastern European Time is on UTC+3:00 right now. Both are on daylight saving, so their clocks read MDT and EEST. The gap changes during the year — see below.

Time in Denver
8:55 pm
Time in Athens
5:55 am
Difference
+9 h
Next clock change
October 25, 2026

Convert a time

EESTEastern European Time

5:00 am

Wed, the next day

When the difference changes

Mountain Time and Eastern European Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:

  1. NowOctober 25, 2026Eastern European Time is 9 hours ahead
  2. October 25, 2026November 1, 2026Eastern European Time is 8 hours ahead
  3. November 1, 2026March 14, 2027Eastern European Time is 9 hours ahead
  4. March 14, 2027March 28, 2027Eastern European Time is 8 hours ahead
  5. March 28, 2027onwardsEastern European Time is 9 hours ahead

Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.

Daylight saving

Mountain Time

Sunday, November 1, 2026

Clocks go back one hour at 2am local time, becoming MST.

Eastern European Time

Sunday, October 25, 2026

Clocks go back one hour at 2am local time, becoming EET.

MST to EET conversion table

Every hour of Tuesday, September 22, 2026, converted from Mountain Time to Eastern European Time. 9 of the 24 hours fall on a different calendar day in Athens, which is marked.

12:00 am MDT
9:00 am EEST
1:00 am MDT
10:00 am EEST
2:00 am MDT
11:00 am EEST
3:00 am MDT
12:00 pm EEST
4:00 am MDT
1:00 pm EEST
5:00 am MDT
2:00 pm EEST
6:00 am MDT
3:00 pm EEST
7:00 am MDT
4:00 pm EEST
8:00 am MDT
5:00 pm EEST
9:00 am MDT
6:00 pm EEST
10:00 am MDT
7:00 pm EEST
11:00 am MDT
8:00 pm EEST
12:00 pm MDT
9:00 pm EEST
1:00 pm MDT
10:00 pm EEST
2:00 pm MDT
11:00 pm EEST
3:00 pm MDT
12:00 am EEST+1 day
4:00 pm MDT
1:00 am EEST+1 day
5:00 pm MDT
2:00 am EEST+1 day
6:00 pm MDT
3:00 am EEST+1 day
7:00 pm MDT
4:00 am EEST+1 day
8:00 pm MDT
5:00 am EEST+1 day
9:00 pm MDT
6:00 am EEST+1 day
10:00 pm MDT
7:00 am EEST+1 day
11:00 pm MDT
8:00 am EEST+1 day

Scheduling between the two

There is no overlap between a nine-to-six working day in Denver and one in Athens — the gap is too wide. A call has to sit early or late for one side. Early morning in Denver is the usual compromise, since that is late afternoon or evening in Athens.

Mountain Time (MDT) is used in Salt Lake City, Albuquerque and Calgary. Arizona keeps MST all year and does not follow MDT.

Eastern European Time (EEST) is used in Helsinki, Bucharest, Kyiv and Cairo

Other conversions