<Li> 1976 - CBS - Sunday, March 14 - 7 p.m. </Li> <P> The year that The Wizard Of Oz returned to CBS . It remained there for twenty - two more years, a likely record in those years for a film's consecutive showings on one network . Initially the movie aired late winter / early spring, but beginning in 1991, the movie moved back and forth from spring to late fall . Another change was that CBS no longer began the movie before normal prime time . Before 1976, when run on a day other than Sunday, NBC took back the 7 p.m. Eastern / 6 p.m. Central time slots from affiliates to run the movie early enough so children could see it before bedtime . Also, prior to 1968, CBS always took the 6 p.m. hour to run the movie early . Logic was that times have changed and children now stay up a little later than they did in the past . From then on, if shown in a Sunday 6 to 8 or 7 to 9 pm time slot on CBS, the film preempted 60 Minutes, so beginning in 1978, CBS executives moved the showings to other nights of the week . If the film was shown on a Sunday, CBS usually scheduled it at 8 pm, so that it did not conflict with 60 Minutes . (As of 2017, 60 Minutes continues to air in the same Sunday 7 p.m. time slot on CBS .) </P> <Ul> <Li> 1977 - CBS - Sunday, March 20 - 7 p.m. </Li> <Li> 1978 - CBS - Easter Sunday, March 26 - 7 p.m. </Li> <Li> 1979 - CBS - Friday, March 23 - 8 p.m. </Li> <Li> 1980 - CBS - Friday, March 7 - 8 p.m. </Li> <Li> 1981 - CBS - Friday, February 27 - 8 p.m. </Li> <Li> 1982 - CBS - Saturday, March 27 - 8 p.m. </Li> <Li> 1983 - CBS - Friday, March 18 - 8 p.m. </Li> <Li> 1984 - CBS - Friday, March 30 - 8 p.m. </Li> <Li> 1985 - CBS - Friday, March 1 - 8 p.m. </Li> <Li> 1986 - CBS - Saturday, February 15 - 8 p.m. </Li> <Li> 1987 - CBS - Friday, March 6 - 8 p.m. </Li> <Li> 1988 - CBS - Wednesday, February 24 - 8: 30 p.m. </Li> </Ul> <Li> 1977 - CBS - Sunday, March 20 - 7 p.m. </Li>

When was the wizard of oz converted to color