The Moon is 1/400th the size of the Sun but also 1/400th the distance from Earth, resulting in the Moon and the Sun being the same size in the sky, a coincidence not shared by any other known planet-moon combination. 
Discussion
I don’t want to annoy with with Flat Earth stuff and I know it’s a conflict-laden topic but IMHO the amount of coincidences of the geocentric model are too staggering to fully embrace it.
Vibes of Cosmos has a lot of good explainers on how FE would work and it makes more sense: https://youtu.be/bmaPwvKn2B8?si=3vfRnKE3xKBNcXs_
(I’m not going to join into a pro/contra FE/GE debate - just let me know you don’t care and I won’t bring it up again.)
golly gosh what a coincidence that such order exists 🙃
"coincidence"