What TV show theme song meant "bedtime" as a kid?

Not always bedtime but the stopwatch to start 60 Minutes was a weekly reminder that the party is over and school is imminent.
- Damn, I felt that. 😩
  That ominous stopwatch ticking every morning meant that it was time to get on the school bus and that the party was over.
  
  Wait what? You watched 60 Minutes everyday? It was always Sunday evenings from my memories, during winter usually right after a Football game, don’t remember the exact timing tho.

M.A.S.H
- My bed was in view of the living room TV, as long as I kept my head under the covers and pretended to be asleep I could watch MASH.
- For me that meant that dinner was half an hour away. That tune always makes me hungry now.

Sandman https://m.youtube.com/watch?v=T7z8Id9eJx0
- Context: A German show which plays after all other shows, and the song is about the children falling asleep.
  Also, if you then heard Bernd, you obviously stayed up too long (but that was kinda the point, I love Bernd)

"King of the Hill"
When Cartoon Network went off and changed to Adult Swim, and this theme song started playing, you knew that it was time to go get some rest. Especially if it was on a weekend. On Sunday, it meant the fun was up, it was time to sleep and get ready for school the next day. And it was always the first show to air on the block every single night.
Memories.

Holy crap, I forgot this was even a thing ... I was awash with memories and feelings as soon as I read the title.
It was M.A.S.H. for me ... parents watching reruns, I think, as I'm not that old.

i love lucy.
we would all drop what we were doing; get together on the couch and watch it every weeknight when my parents starting enforcing a bedtime to help get them more sleep out of their working schedules.

The end of The Waltons.
"Goodnight John Boy."
- "Dammit! Can't a guy masturbate in this house?!"

Cheers. Every weeknight, walking down the hallway to the sound of "Making your way in the world today takes everything you've got..."
- I'm not familiar with M.A.S.H. (though I know of the show) to know that song. So I read it to myself to the tune of this beaut

When I was really young (6 or 7) on weekdays it was the credits music for Dexters Laboratory, which I think ended at 8? On weekends it was The Soprano's theme. My parents would check out the season VHSs and later DVDs from the library.

Xfiles theme song.
As soon as that shit came on I ran to bed. Fuuuck that, terrifying.

Fat cat!
My mum recorded this and would play it when she wanted me to goto bed early.

Not really a show, but Im familiar with the old CBC (canada) sign-off. Wasn't really my bed time either, I have insomnia disorder, I would just read books after the tv went off-air for the night. I'm also familiar with the CBC sign-on, and the first program on in the morning was 100 Huntley Street, followed by the PTL Club, before Jim and Tammy Faye went to jail.

NCIS, or its variants. I think where I lived, it came on at 9pm, and because my parents didn't want me to watch it, (violence and all that) it was a convenient bedtime marker.

Space Ghost: Coast to Coast. Sometimes my parents let me stay up to watch it, but they stopped after some dumb gag scared me and I started crying.

https://youtu.be/ope69VrBLpg
Literally the closing signal of the evening tales show, the Hungarian "Television Bear".

64 Zoo Lane! It’s from the late ‘90s but it has this weird timelessness about it I think.

This question reminds me of the early '70s, in Italy, when only a state-owned TV channel was broadcasting, and without ads. Except between 8:30 and 9:00 pm, in a special time where the spots were like little show, the children were watching them with their eyes glued to the screen, and then... bedtime! It was "Carosello", and for the whole Italy: "the children to bed after Carosello"!