What is the time difference between AST and MSK?

MSK is 7h 0m ahead of AST. AST is UTC-4 and MSK is UTC+3.

Does AST change for daylight saving time?

AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.

MSK is 7h 0m ahead of AST. When it's 12:00 PM AST, it's 7:00 PM MSK.

From

AST · UTC-4

12:09:48AM

Atlantic Standard Time

MSK · UTC+3

7:09:48AM

Moscow Standard Time

9:00 AM AST=4:00 PM MSK

12:00 PM AST=7:00 PM MSK

5:00 PM AST=12:00 AM(+1 day) MSK

Shaded rows are within standard working hours (8am–6pm) on both sides.

Russia does not observe daylight saving time, so MSK (UTC+3) applies year-round.

What is the time difference between AST and MSK?: MSK is 7h 0m ahead of AST. AST is UTC-4 and MSK is UTC+3.
What is 12:00 PM AST in MSK?: 12:00 PM AST is 7:00 PM MSK.
Does AST change for daylight saving time?: AST is a fixed offset of UTC-4 and does not itself change for daylight saving time.