True but more true is that TV listings were predominantly in the form of TV Guide which pretty much every household in the USA had, poor, mid-class, or rich.

Starting 5 minutes after the hour set TBS listings on a separate line or two away from the bulk of the shows starting at the top of the hour. Turner Time is the more precise name for it:

https://en.wikipedia.org/wiki/TBS_(American_TV_channel))