Both games will be broadcast on TNT.
The Nuggets forced a Game 7 by pounding the Lakers 113-96 in Denver, coming back from a 3-1 series deficit. Ty Lawson led the way with 32 points for the Nuggets.
Oklahoma City will play the winner of the Lakers-Nuggets Game 7 on Monday at 9:30 p.m. ET. The Thunder will have gone nine days without playing after sweeping Dallas.
The Sixers advanced by beating the top-seeded Bulls in six games, escaping with a dramatic win in Philadelphia. The Celtics beat the Hawks in six, finishing them off in a close game as well. The Sixers took the season series over Boston 2-1.