Here is something I didn’t know… Mork and Mindy was a spinoff of the 50’s show… Happy Days.
The series was a spinoff of the sitcom Happy Days. The character of Mork first appeared in the season 5 episode, “My Favorite Orkan,” where he threatened to take Richie Cunningham back to Ork as an example of a human, but his plan is foiled by Fonzie.
Happy Days was set in the 50’s. Mork and Mindy was set in the 1978.