I'd suggest the 14th. While MP Lix can be played with at least 2 players, Among Us requires many more (I think 5 is the minimum? not exactly sure), with a full group of 10 being ideal, to be playable, so I'd really rather the two sessions not be competing with each other, since if players who would play both have to make a choice, it could prevent the Among Us session from having enough players to function.