Offset
The time difference between Mountain Time and Saint Petersburg is 9 hours.
Mountain Time (MDT) is behind Saint Petersburg (MSK).
MDT: UTC-6
MSK: UTC+3
Mountain Time is currently observing daylight saving time; Saint Petersburg is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Mountain Time and Saint Petersburg don't overlap on the same weekday. Saint Petersburg is 9 hours ahead of Mountain Time.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–11 AM in Mountain Time (4 PM–8 PM in Saint Petersburg) — suggest 9:00 AM Mountain Time (6:00 PM Saint Petersburg).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
Russia
- New Year's DayThu, Jan 1
- New Year holidayFri, Jan 2
- New Year holidaySat, Jan 3
- New Year holidaySun, Jan 4
- New Year holidayMon, Jan 5
- New Year holidayTue, Jan 6
- Christmas Day (Orthodox)Wed, Jan 7
- Defender of the Fatherland DayMon, Feb 23
- International Women's DaySun, Mar 8
- Labour DayFri, May 1
- Victory DaySat, May 9
- Russia DayFri, Jun 12
- Unity DayWed, Nov 4
About these zones
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Saint Petersburg uses Moscow Time (MSK). To call Russia, dial +7.
Saint Petersburg is approximately 5,100 miles north of Mountain Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| MST | Saint Petersburg | Day |
|---|---|---|
| 12:00 am | 9:00 am | Same day |
| 1:00 am | 10:00 am | Same day |
| 2:00 am | 11:00 am | Same day |
| 3:00 am | 12:00 pm | Same day |
| 4:00 am | 1:00 pm | Same day |
| 5:00 am | 2:00 pm | Same day |
| 6:00 am | 3:00 pm | Same day |
| 7:00 am | 4:00 pm | Same day |
| 8:00 am | 5:00 pm | Same day |
| 9:00 am | 6:00 pm | Same day |
| 10:00 am | 7:00 pm | Same day |
| 11:00 am | 8:00 pm | Same day |
| 12:00 pm | 9:00 pm | Same day |
| 1:00 pm | 10:00 pm | Same day |
| 2:00 pm | 11:00 pm | Same day |
| 3:00 pm | 12:00 am | +1 day |
| 4:00 pm | 1:00 am | +1 day |
| 5:00 pm | 2:00 am | +1 day |
| 6:00 pm | 3:00 am | +1 day |
| 7:00 pm | 4:00 am | +1 day |
| 8:00 pm | 5:00 am | +1 day |
| 9:00 pm | 6:00 am | +1 day |
| 10:00 pm | 7:00 am | +1 day |
| 11:00 pm | 8:00 am | +1 day |
Daylight saving time
Mountain Time observes daylight saving time; Saint Petersburg does not. The offset between the two zones changes when Mountain Time transitions: on Sunday, November 1, 2026, clocks fall back from MDT to MST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:28 PM
- Day length
- 14h 56m
- Sunrise
- 3:40 AM
- Sunset
- 10:19 PM
- Day length
- 18h 39m
Daylight overlap: 7h 46m — 5:33 AM–1:19 PM in Mountain Time (2:33 PM–10:19 PM in Saint Petersburg). Both locations are in daylight during this window.
Cities in these zones
Cities in Mountain Time
Other cities in Moscow Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Airports in Moscow Time
- DME
- SVO
- VKO
- ZIA
- LED
- GOJ
Related conversions
Common conversions
- What is 9:00 am MST in Saint Petersburg?
- 9:00 am MST is 6:00 pm Saint Petersburg.
- What is 12:00 pm MST in Saint Petersburg?
- 12:00 pm MST is 9:00 pm Saint Petersburg.
- What is 12:30 pm MST in Saint Petersburg?
- 12:30 pm MST is 9:30 pm Saint Petersburg.
- What is 2:00 pm MST in Saint Petersburg?
- 2:00 pm MST is 11:00 pm Saint Petersburg.
- What is 5:00 pm MST in Saint Petersburg?
- 5:00 pm MST is 2:00 am Saint Petersburg, the next day.
- What is 11:30 pm MST in Saint Petersburg?
- 11:30 pm MST is 8:30 am Saint Petersburg, the next day.