Hello all! I'm an aspiring DM, and have been spending the past few months working on and off on a campaign setting for a future game! I had a question regarding domains, specifically for two deities within the world I've been building: The Goddess of the Sun and Moons, and her father, the God of Time and Space, who is the Overgod of my world.

I figured for the goddess, the Light domain is a pretty obvious choice, but is there another domain that could possibly fit alongside it? The Life domain seems like it would fit well, but what about the Arcana and/or Knowledge domains?

And on the subject of the Knowledge domain, I feel like for the father it would work, seeing as time is part of his portfolio. But what other domains fit well with it? Or do Overgods even have domains? Would appreciate your advice and any opinions you may have!

edit: Also if you all have any suggestions on the alignment for these two, would love to here your thoughts as well.