Company's chief operating officer at the time, Michael Eisner, and his then-Fox counterpart, Barry Diller, had worked together at ABC and at Paramount Pictures. In 1988, Disney purchased independent television station KHJ-TV in Los Angeles, changing its call letters to KCAL-TV the next year. The station's new owners wanted DuckTales to be shown on KCAL, effectively taking the local television rights to the animated series away from Fox-owned KTTV. Furious at the breach of contract, Diller pulled DuckTales from all of Fox's other owned-and-operated stations in the fall of 1989. Diller also encouraged the network's affiliates to do the same, though most did not initially. As Disney went forward in developing The Disney Afternoon, Fox (whose schedule at the time was limited to prime time programming on Saturday and Sunday nights) began the process of launching its own children's programming lineup. Fox Kids was launched on September 8, 1990, as the Fox Children's Network, a joint venture between the Fox Broadcasting Company and its affiliates. Originally headed by division president Margaret Loesch, its programming aired for 30 minutes per day on Monday through Fridays, and for 3 hours on Saturday mornings. In September 1991, the block was rebranded as the Fox Kids Network, with its programming expanding to 90 minutes on weekdays and 4 hours on Saturday mornings. The weekday editions of the block grew to three hours the following year. Scheduling Throughout most of its history, Fox Kids aired several promos for its programs during commercial breaks, with no exact time slots announced for the shows. This was due to the programs airing at different times depending on the local Fox-affiliated station's schedule in the viewer's television market (i.e., if Fox Kids aired a promo for a show such as Power Rangers, it would not announce an exact Monday-Friday/Saturday time slot to viewers, forcing the viewers to check their local Fox station listings, such as their TV Guide or newspaper, to search for the air time of the show, and some stations use voiceovers to announce the time slot, similar to those like first-run syndicated programs and/or PBS’ PTV block at the time). By the fall of 1992, Fox Kids increased its schedule to three hours on Monday through Fridays, airing usually from 2:00 PM to 5:00 PM local time (making Fox the first network to air programming in the 4:00 p.m. hour since 1986), and four hours on