Well, I have over 3200 like songs from Jimmy Buffet to Tool and from Miles Davis to Billy Strings, so I can literally just play my own liked songs for a pretty much a whole month at work and never hear the same song twice. (unless I put it on shuffle 🙄).

I have also made playlists that last for 8 hours or more. Or I could queue up several shorter playlists at the start of the day, and they'd play throughout the day.

Playlist radios, enhancing playlists, Spotify playlists, radios based on a single song choice. If you're feeling adventurous look for playlists made by other listeners that would last all day.

My work days are too variable and filled with interruptions so I don't ever try to set and let something play. But on the weekends I'll select a playlist or a group of albums to play and just let it go all day.

For instance today I queued up a couple Trip-hop playlists along with a funk/soul mix and we just had that on in the background from noon until 9:00 PM with family and friends over. Only paused it when we were doing video calls with our grown kids who couldn't be here.

I hope this gave you a few ideas for how to listen to Spotify all day.