High Quality Content by WIKIPEDIA articles! UPN Kids was a short-lived weekday and Sunday morning children's programming block on UPN that launched on September 10, 1995. During the 1998-1999 season, the block was called The UPN Kids Action Zone. The block aired for 2 hours each day (7:00AM-9:00AM on weekdays and 9:00AM-11:00AM on Sundays). UPN Kids shut down on September 5, 1999 and was replaced with Disney's One Too.