Thank you for the great suggestions :)
I had the same idea earlier today to change the randomness into a shuffled list, as some levels were being repeated too many times
At the moment there is no explanation when a level is day or night, the only difference is the overall visuals of the map, the cursor icon, and the fox is a little brighter during night. I will experiment to find an effective way of notifying the player when a level is day or night