# 1977–78 United States network television schedule (late night)

These are the late-night schedules for the three U.S. television networks during the 1977–78 season. All times are Eastern and Pacific.
PBS is not included, as member television stations had local flexibility with most of their schedules, and broadcast times for network shows might have varied. ABC and CBS are not included on the weekend schedules because those networks did not offer late-night programming on the weekend.
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 | Local | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | ABC Late Night | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off |
| CBS | local programming | The CBS Late Movie | The CBS Late Movie | The CBS Late Movie | The CBS Late Movie | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off | Local programming or sign-off |
| NBC | local programming | The Tonight Show Starring Johnny Carson | The Tonight Show Starring Johnny Carson | The Tonight Show Starring Johnny Carson | The Tomorrow Show (to 2:00; Mon.-Thur.)/The Midnight Special (Fri) | The Tomorrow Show (to 2:00; Mon.-Thur.)/The Midnight Special (Fri) | The Tomorrow Show (to 2:00; Mon.-Thur.)/The Midnight Special (Fri) | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off |

## Saturday

| - | 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 |
| NBC | local programming | Weekend / Saturday Night Live | Weekend / Saturday Night Live | Weekend / Saturday Night Live | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off |

## Sunday

| - | 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 |
| NBC | local programming | NBC Late Night Movie | NBC Late Night Movie | NBC Late Night Movie | NBC Late Night Movie | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off | local programming or sign-off |