The manager of the Bashundhara Cineplex is going to schedule six movies—M, N, P, Q, R, and S—during the course of one week. He will schedule one movie each day from Monday through Saturday. The manager must schedule the movies according to the following conditions:

M must be scheduled earlier in the week than R.

P must be scheduled on Tuesday.

Q must be scheduled on the day immediately before or immediately after the day on which N is scheduled.

If Q is scheduled on Thursday, the latest day on which M can be scheduled is: