Well in da Summertime the earth is tilting towards the sun in the northern portion of the globe.
Since the earth is tilted people could fall off
Sooooo the " Gods in charge "
lit up the nite, all nite and all day, to keep people from tripping on the Icebergs and falling off said earth.
Could be bad bad fallin' off the earth, very dangerous.
I mean wha ya gonna go
That's my story and I'm sticking to it