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These are the late night schedules on all three networks for each calendar season beginning September 1964. All times are Eastern/Pacific.

1964 marked the debut of Les Crane's short-lived talk show on ABC, the first time since 1955 that any network other than NBC had offered non-news programming in the late-night time slot. Crane's show ended after less than a season.

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.

Monday-Friday

- 11:00 PM 11:30 PM 12:00 AM 12:30 AM 1:00 AM 1:30 AM 2:00 AM 2:30 AM 3:00 AM 3:30 AM 4:00 AM 4:30 AM 5:00 AM 5:30 AM
ABC Fall Local The Les Crane Show Local programming or sign-off
Winter ABC's Nightlife
June ABC's Nightlife with Les Crane
CBS Local programming or sign-off
NBC 11:15 PM: The Tonight Show Starring Johnny Carson local programming or sign-off

Saturday/Sunday

- 11:15 PM 11:30 PM 12:00 AM 12:30 AM 1:00 AM 1:30 AM 2:00 AM 2:30 AM 3:00 AM 3:30 AM 4:00 AM 4:30 AM 5:00 AM 5:30 AM
NBC January 11:15 PM: The Saturday/Sunday Tonight Show local programming or sign-off

By network

ABC

NBC