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
EEST — Eastern 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:
- Now – October 25, 2026Eastern European Time is 9 hours ahead
- October 25, 2026 – November 1, 2026Eastern European Time is 8 hours ahead
- November 1, 2026 – March 14, 2027Eastern European Time is 9 hours ahead
- March 14, 2027 – March 28, 2027Eastern European Time is 8 hours ahead
- March 28, 2027 – onwardsEastern 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
Clocks go back one hour at 2am local time, becoming MST.
Eastern European Time
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