Prague is 2 hours behind Moscow
Best overlap: 10:00 AM to 6:00 PM in Moscow is 8:00 AM to 4:00 PM in Prague.
10:00 AM to 6:00 PM in Moscow is when Prague is also working, at 8:00 AM to 4:00 PM their time. Scheduling is forgiving here: with 8 hours of overlap, a missed slot just means picking another one the same day. The window above shifts seasonally: Prague keeps daylight saving while Moscow ignores it.