[2020] It's never daylight

How far north/south are you? The game simulates where you are and changes the daylight hours based on that based on season.

Yeah about half the year it will be dark almost all the time, and the other half of the year it will be light all the time in that position.

Not sure, last time I played ice sheet was when I was doing internal testing of the new DLC and I noticed it there.