On December 22, 1970, CBS' only Christmas-themed offering was a rerun of a 1968 Beverly Hillbillies episode to start the night. It did have A World of Love, a star-studded special presented in conjunction with UNICEF. At 10:00 perhaps 60 Minutes' report on unsafe toys had a seasonal theme!
NBC had a Christmas episode of The Don Knotts Show, a new Julia, and a broadcast of the 1954 White Christmas with Der Bingle and Danny Kaye.
40 years ago, on Monday, December 22, 1980, CBS ran the lone Christmas episode of Flo, "The Miracle of Casa de Huevos." In an alternate universe somewhere, it's a beloved classic run in households all over the country each year.
NBC had a 3-hour (!) Little House on the Prairie retrospective. That is a LOT of heartbreak, crisis, and pestilence. ABC followed a new That's Incredible! with a Monday Night Football game between the San Diego Chargers and America's Team: the Pittsburgh Steelers. I won't reveal the outcome, but I think cheating was involved.