1989–1990 United States network television schedule (late night)

These are the late night Monday-Friday schedules on all three networks for each calendar season beginning September 1989. All times are Eastern/Pacific.

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

Contents

Fall 1989

- 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 programming ABC News Nightline Local
CBS local programming The Pat Sajak Show local programming CBS News Nightwatch
NBC local programming The Tonight Show Starring Johnny Carson/Saturday Night Live (Sat.)/The George Michael Sports Machine (Sun., 11:30-12:00) Late Night with David Letterman Later with Bob Costas/Friday Night Videos (Fri., 1:30-2:30) local programming

Winter 1989/1990

- 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 programming ABC News Nightline Local
CBS local programming The Pat Sajak Show local programming CBS News Nightwatch
NBC local programming The Tonight Show Starring Johnny Carson/Saturday Night Live (Sat.)/The George Michael Sports Machine (Sun., 11:30-12:00) Late Night with David Letterman Later with Bob Costas/Friday Night Videos (Fri., 1:30-2:30) local programming

Spring 1990

- 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 programming ABC News Nightline Local
CBS local programming CBS Late Night local programming CBS News Nightwatch
NBC local programming The Tonight Show Starring Johnny Carson/Saturday Night Live (Sat.)/The George Michael Sports Machine (Sun., 11:30-12:00) Late Night with David Letterman Later with Bob Costas/Friday Night Videos (Fri., 1:30-2:30) local programming

Summer 1990

- 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 programming ABC News Nightline Into the Night Starring Rick Dees local programming
CBS local programming CBS Late Night local programming CBS News Nightwatch
NBC local programming The Tonight Show Starring Johnny Carson/Saturday Night Live (Sat.)/The George Michael Sports Machine (Sun., 11:30-12:00) Late Night with David Letterman Later with Bob Costas/Friday Night Videos (Fri., 1:30-2:30) local programming
1946–47 • 1947–48 • 1948–49 • 1949–50
1950–51 • 1951–52 • 1952–53 • 1953–54 • 1954–55 • 1955–56 • 1956–57 • 1957–58 • 1958–59 • 1959–60
1960–61 • 1961–62 • 1962–63 • 1963–64 • 1964–65 • 1965–66 • 1966–67 • 1967–68 • 1968–69 • 1969–70
1970–71 • 1971–72 • 1972–73 • 1973–74 • 1974–75 • 1975–76 • 1976–77 • 1977–78 • 1978–79 • 1979–80
1980–81 • 1981–82 • 1982–83 • 1983–84 • 1984–85 • 1985–86 • 1986–87 • 1987–88 • 1988–89 • 1989–90
1990–91 • 1991–92 • 1992–93 • 1993–94 • 1994–95 • 1995–96 • 1996–97 • 1997–98 • 1998–99 • 1999–00
2000–01 • 2001–02 • 2002–03 • 2003–04 • 2004–05 • 2005–06 • 2006–07 • 2007–08 • 2008–09 • 2009–10 • 2010-11