Around the time that KGO ran World's Greatest Chillers on late Saturday nights, KOVR 13 in Sacramento was advertising a show called Lights Out.

As with KGO's show, Lights Out was almost certainly host-free. It is interesting that KOVR chose to advertise it at all. It leads me to wonder how programmers saw the late night hours in those days. Did they hope for a vast untapped market of insomniacs? All through the 60s, the TV Guide listings show these tentative attempts at late-night or all-night broadcasting. It took the eventual success of UHF in the early 70s to make 24 hour local broadcasting viable.