January 15, 1980
Episode 1 of Season 20 premiered on January 15, 1980
February 12, 1980
Episode 2 of Season 20 premiered on February 12, 1980
March 11, 1980
Episode 3 of Season 20 premiered on March 11, 1980
April 8, 1980
Episode 4 of Season 20 premiered on April 8, 1980
May 6, 1980
Episode 5 of Season 20 premiered on May 6, 1980
June 3, 1980
Episode 6 of Season 20 premiered on June 3, 1980
July 8, 1980
Episode 7 of Season 20 premiered on July 8, 1980
August 5, 1980
Episode 8 of Season 20 premiered on August 5, 1980
September 2, 1980
Episode 9 of Season 20 premiered on September 2, 1980
September 30, 1980
Episode 10 of Season 20 premiered on September 30, 1980
October 28, 1980
Episode 11 of Season 20 premiered on October 28, 1980
November 25, 1980
Episode 12 of Season 20 premiered on November 25, 1980
December 23, 1980
Episode 13 of Season 20 premiered on December 23, 1980