I need to go out to Minsk on Sunday Sep 23 and come back on Friday Sep 28. Preceding that is a requirement for being in Berlin Monday Sep 17 and 18, and Nice on 19, 20 and 21. Then the question is whether or not to go home overnight on Friday 21 and travel to Prague on the 22nd, or go to Prague and have a day in Prague on Saturday 22nd. From Berlin to Nice, it's as fast to go via Heathrow as via Munich on LH.