1964 Valiant "Get Runnin & Drivin"

When you change a pinion seal, do you mark the nut and also the end of the pinion in the same spot with a punch before removing the nut? Then tighten the nut back to that spot? I've had more than one old mechanic tell me to do it that way back when I was learning to work on stuff. Done a half a dozen that way and never had a problem.