On the very first page of the Bible, Genesis 16 tells us that God made two great lights.
The Moon is not mentioned. It is not a light, but a reflector. Hardly a great light. The "stars he made also" suggests that they are not one of the great lights.
If a light "rules" the night, then it must be day. I believe, like everyone else, that the Sun rules the night or darkness of space to give us daytime. But this would be the "lesser" light. The "greater" light rules the day. This would mean that the second great light, our electrified atmosphere, must supply even more than the Sun's light, to give us two great lights.
I believe the second great light is created, by day, in our atmosphere, in the area where science acknowledges there are huge amounts of high voltage electricity, and that it would probably be impossible for an area of high voltage and low pressure atmosphere not to create light, as this would be nothing other than the fluorescent or neon type lights which are in common use.