Originally Posted by Danny Serafini
Sept. counts the same as any other month.
Right. In September, the active roster limit changes from 25 to 40. That's the only change. Players still have to be on the 40-man roster to be placed on the active roster; they still have to be promoted to the active roster if they weren't there already (it doesn't just happen automatically on 9/1); time spent on the active roster still counts as service time.