Offset
The time difference between Saint Petersburg and Mountain Time is 9 hours.
Saint Petersburg (MSK) is ahead of Mountain Time (MDT).
MSK: UTC+3
MDT: UTC-6
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 Saint Petersburg and Mountain Time don't overlap on the same weekday. Mountain Time is 9 hours behind Saint Petersburg.
With some flexibility, there’s a workable window outside standard hours:
- 4 PM–8 PM in Saint Petersburg (7 AM–11 AM in Mountain Time) — suggest 6:00 PM Saint Petersburg (9:00 AM Mountain Time).
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.
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
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
About these zones
Saint Petersburg uses Moscow Time (MSK). To call Russia, dial +7.
Mountain Time is also known as MST, or MDT. To call United States, dial +1.
Mountain Time is approximately 5,100 miles northwest of Saint Petersburg.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Saint Petersburg | MST | Day |
|---|---|---|
| 12:00 am | 3:00 pm | -1 day |
| 1:00 am | 4:00 pm | -1 day |
| 2:00 am | 5:00 pm | -1 day |
| 3:00 am | 6:00 pm | -1 day |
| 4:00 am | 7:00 pm | -1 day |
| 5:00 am | 8:00 pm | -1 day |
| 6:00 am | 9:00 pm | -1 day |
| 7:00 am | 10:00 pm | -1 day |
| 8:00 am | 11:00 pm | -1 day |
| 9:00 am | 12:00 am | Same day |
| 10:00 am | 1:00 am | Same day |
| 11:00 am | 2:00 am | Same day |
| 12:00 pm | 3:00 am | Same day |
| 1:00 pm | 4:00 am | Same day |
| 2:00 pm | 5:00 am | Same day |
| 3:00 pm | 6:00 am | Same day |
| 4:00 pm | 7:00 am | Same day |
| 5:00 pm | 8:00 am | Same day |
| 6:00 pm | 9:00 am | Same day |
| 7:00 pm | 10:00 am | Same day |
| 8:00 pm | 11:00 am | Same day |
| 9:00 pm | 12:00 pm | Same day |
| 10:00 pm | 1:00 pm | Same day |
| 11:00 pm | 2:00 pm | Same 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
- 3:40 AM
- Sunset
- 10:17 PM
- Day length
- 18h 37m
- Sunrise
- 5:33 AM
- Sunset
- 8:28 PM
- Day length
- 14h 55m
Daylight overlap: 7h 45m — 2:33 PM–10:17 PM in Saint Petersburg (5:33 AM–1:17 PM in Mountain Time). Both locations are in daylight during this window.
Cities in these zones
Other cities in Moscow Time
Cities in Mountain Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Moscow Time
- DME
- SVO
- VKO
- ZIA
- LED
- GOJ
Airports in Mountain Time
- BJC
- DEN
- OGD
- SLC
Related conversions
Common conversions
- What is 9:00 am Saint Petersburg in MST?
- 9:00 am Saint Petersburg is 12:00 am MST.
- What is 12:00 pm Saint Petersburg in MST?
- 12:00 pm Saint Petersburg is 3:00 am MST.
- What is 12:30 pm Saint Petersburg in MST?
- 12:30 pm Saint Petersburg is 3:30 am MST.
- What is 2:00 pm Saint Petersburg in MST?
- 2:00 pm Saint Petersburg is 5:00 am MST.
- What is 5:00 pm Saint Petersburg in MST?
- 5:00 pm Saint Petersburg is 8:00 am MST.
- What is 11:30 pm Saint Petersburg in MST?
- 11:30 pm Saint Petersburg is 2:30 pm MST.