AST to MSK Converter
MSK is 7 hours ahead of AST. 9:00 AM AST = 4:00 PM MSK.
MSK is 7 hours ahead of AST at the moment. To convert AST to MSK, add 7 hours to the AST time: 9:00 AM AST = 4:00 PM MSK.
AST (Atlantic Time) is used in Nova Scotia, New Brunswick, PEI; Puerto Rico and the Eastern Caribbean (all year). MSK (Moscow Time) is used in Moscow, St Petersburg and western Russia; Belarus.
AST here is Atlantic Standard Time, not Arabia Standard Time.
AST to MSK time conversion table
AST to MSK on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| AST | MSK | Day |
|---|---|---|
| 12:00 AM AST | 7:00 AM MSK | — |
| 1:00 AM AST | 8:00 AM MSK | — |
| 2:00 AM AST | 9:00 AM MSK | — |
| 3:00 AM AST | 10:00 AM MSK | — |
| 4:00 AM AST | 11:00 AM MSK | — |
| 5:00 AM AST | 12:00 PM MSK | — |
| 6:00 AM AST | 1:00 PM MSK | — |
| 7:00 AM AST | 2:00 PM MSK | — |
| 8:00 AM AST | 3:00 PM MSK | — |
| 9:00 AM AST | 4:00 PM MSK | work hours |
| 10:00 AM AST | 5:00 PM MSK | — |
| 11:00 AM AST | 6:00 PM MSK | — |
| 12:00 PM AST | 7:00 PM MSK | — |
| 1:00 PM AST | 8:00 PM MSK | — |
| 2:00 PM AST | 9:00 PM MSK | — |
| 3:00 PM AST | 10:00 PM MSK | night |
| 4:00 PM AST | 11:00 PM MSK | night |
| 5:00 PM AST | 12:00 AM MSK | next day |
| 6:00 PM AST | 1:00 AM MSK | next day |
| 7:00 PM AST | 2:00 AM MSK | next day |
| 8:00 PM AST | 3:00 AM MSK | next day |
| 9:00 PM AST | 4:00 AM MSK | next day |
| 10:00 PM AST | 5:00 AM MSK | next day |
| 11:00 PM AST | 6:00 AM MSK | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert AST to MSK
Add 7 hours to the AST time to get MSK.
Example: 9:00 AM AST = 4:00 PM MSK.
Across midnight: 10:00 PM AST = 5:00 AM MSK (next day). The date changes, so always check the day as well as the hour.
Time difference between AST and MSK
The time difference between AST and MSK is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: MSK is 7 hours ahead of AST.
- 8 Mar 2026 – 31 Oct 2026: MSK is 6 hours ahead of AST.
- 1 Nov 2026 – 30 Dec 2026: MSK is 7 hours ahead of AST.
AST and MSK during daylight saving time
- AST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from AST (UTC−4) to ADT (UTC−3).
- MSK does not observe daylight saving time; it stays on UTC+3 all year.
Best time for a meeting between AST and MSK
AST and MSK share 1 hour of the 9 AM–5 PM working day. Any time between 9:00 AM and 10:00 AM AST lands between 4:00 PM and 5:00 PM MSK, inside working hours for both.
AST to MSK FAQ
What is the time difference between AST and MSK?
Right now MSK is 7 hours ahead of AST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM AST in MSK?
9:00 AM AST is 4:00 PM MSK.
What is 12 PM (noon) AST in MSK?
12:00 PM AST is 7:00 PM MSK.
Is MSK ahead of or behind AST?
MSK is 7 hours ahead of AST, so it is later in MSK than in AST.
Does AST change for daylight saving time?
Yes. AST next changes on 14 Mar 2027, when clocks go forward one hour from AST to ADT.
Does MSK change for daylight saving time?
No. MSK stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between AST and MSK?
AST and MSK share 1 hour of the 9 AM–5 PM working day. Any time between 9:00 AM and 10:00 AM AST lands between 4:00 PM and 5:00 PM MSK, inside working hours for both.
Related conversions
Convert MSK to AST
Convert AST to other time zones
Convert other time zones to MSK
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.