I have a I have bunch of glow plants and some really cool lights but they are totally useless because it's daylight 24/7 in Artaeum. Extremely annoying.
I'd like this too. I have alot of really cool lights as well that I'd like to put outside but since there isn't a night cycle there's no use putting them out there since they don't show up as well in daylight.
It does not actually orbit anything. It does have a dusk/day cycle.
I am not disagreeing with you that a night time would be great, just explaining why it seems we do not have it. I would respect Zos sticking to what they interpret lore to be.