There is no time difference between Berlin and Prague. Both cities use Central European Time (CET, UTC+1 in winter and CEST, UTC+2 in summer). When it's 9:00 AM in Berlin, it's also 9:00 AM in Prague.
Both cities observe daylight saving time on the same EU schedule, so they remain synchronized year-round.
Any time works! Since both cities share the same timezone, you can schedule calls during standard business hours (9:00 AM - 6:00 PM) without any time conversion needed.
Berlin and Prague are neighboring capitals connected by direct trains taking about 4.5 hours and flights taking just 1 hour. Both cities are major tech and startup hubs in Central Europe.