With macOS Mojave, Apple introduced Dynamic Desktops. Simply put, these are wallpapers that shift with the time of day, changing the lighting and look of the wallpaper with the progress of the sun across the sky. It’s a pretty nice piece of eyecandy.
If you’re running Linux and you want a similar feature on your machine, there are multiple options for you to choose from. The projects are pretty well documented so there’s no point in creating an entire tutorial on how to set dynamic wallpapers on your Linux machine. Just take a look at the links below and choose your posion: