out-of-course

out-of-course (not comparable)

1. Not occurring in the normal course of things.
   • 1960 January, G. Freeman Allen, “"Condor"—British Railways' fastest freight train”, in Trains Illustrated, page 48:

     The inspector estimated that the whole "Condor" schedule is at least 45 min. easier than the diesels' potential, but of course some margin must be left for out-of-course delays.

   • 2021 September 22, Industry Insider, “A new way of thinking”, in RAIL, number 940, page 92:

     It [greater service frequency] also removed the need to enhance services for out-of-course peak demand. There were fewer occasions when additional services were needed to cater for large-scale cultural and sporting events.