Berlin and Budapest are in the same time zone. Both cities use Central European Time (CET/CEST). When it's noon in Berlin, it's also noon in Budapest.
Both cities observe daylight saving time, switching between CET (UTC+1) in winter and CEST (UTC+2) in summer.
Any time works! Since both cities are in the same time zone, scheduling calls is never a problem. Business hours are identical.
Berlin and Budapest are connected by direct flights taking about 1.5 hours. Both are major European capitals with strong cultural and economic ties within the EU.