I am interested in this question, can I make an endless day on my map.
You might need to change the bias in the environment -> lighting tab
pushing it left or right will make the day night cycle be mostly day or mostly night
You could also try rotating the sun in the same tab to make it so that the sun goes around the map like it would in the arctic if that doesn’t work. I believe that option is called azimuth, but play around with the rest of the sun settings to see if azimuth isn’t right.