Pub. L. 86-682, tit. 39, pt. I, ch. 7, sec. 709
Arrival and departure of mail
§ 709. Arrival and departure of mail The Postmaster General shall furnish to the postmasters at the terminals of each route— (1) a schedule of arrivals and departures of mail at their offices; and (2) notice of any change in the arrival and departure that may be ordered. Postmasters shall post the schedules and notices in a conspicuous place in their offices.