I could never understand why both coasts run their local news at 11:00, while for “flyover country” it’s always been at 10:00.
Flyover country was more geared to agricultural life, where early rising is necessary, and ergo early to bed as well. The power centers of media and office work on the urban coasts used to start work at 9:00 AM in the last century, before universal 24/7 global communications. By the 90s, opening bell had sneaked up to 8:00 AM.
Now, with Tivo, streaming and remote work, any sort of time-slots attached to TV programming will become less and less meaningful. I hope they keep most of the obscenity off the air when schoolchildren are awake; but it is creeping into everything.