Back in the 1960-65 era in my home town (Rochester, NY) the "children's hours" were usually 4 to 6 PM after the kids got home and before the local news started at 6. On the NBC station (then WROC-TV) you got Popeye cartoons after the last network game show of the afternoon, which was usually Gene Rayburn's original Match Game. On the CBS affiliate, WHEC-TV, it was usually Bugs Bunny cartoons after the last game show. Finally on ABC affiliate WOKR, American Bandstand wrapped up and gave way to the Mickey Mouse Club at 5:00 followed by a dinner hour movie at 5:30 (they ran local news followed by a delayed broadcast of the network news between 7:00 and the start of network prime time programming at 7:30 for the first couple of years after they signed on in 1962)