Hello how may I help you? help me with city facts I can do that. What would you like to know? for Prague, what river goes through it? The Danube river flows through Prague how long is that river? The Danube river is approximately 530 miles long do you know what time the sun sets in Prague? At this time of year, the sun sets in Prague at 9:14 local time thanks for the info You are welcome, have a great day