I didn't expect a 3D game for a 3h jam, and even less in Godot, I am pleasantly surprised! 😁
I found the texture that interferes with your vision to be quite annoying, it made everything harder as I couldn't see properly, and I don't really understand its purpose
The day/night mechanic is interesting indeed as you can control your environment easily and how you want to interact with it, consider adding a tween to the day/night change, it will improve the game feel 😊