The 1988 NBC sitcom Day by Day was a short-lived spin-off from Family Ties that centered on a character never seen in the original series. It followed Brian Harper and his family as they opened a home daycare center.
Day by Day premiered in 1988 and ran for two seasons totaling 33 episodes before NBC cancelled it in June 1989. The show was set in the same universe as Family Ties but focused on Steven Keaton's former college roommate Brian Harper, played by Douglas Sheehan, along with his wife Kate and their children and nanny.