These are the late night schedules on all three networks beginning September 1967. All times are Eastern/Pacific.

This article does not cite any sources. (December 2018)

NET is not included, as member television stations have local flexibility over most of their schedules and broadcast times for network shows may vary, ABC is not included on the weekend schedules (as the network do not offer late night programs of any kind on weekends).

Talk/Variety shows are highlighted in yellow, Local News & Programs are highlighted in white.