Oh! I'm dense, lemme try to reason this out. If we discard this complex Copernican model, and maybe that Ptolymean stuff too, which also has a whiff of science to it, it should be obvious that the earth doesn't move--I can't feel it moving under my feet--and the sun makes one circle around the sun every *day*, not year, again obvious by personal observation.
As for why there are seasons that repeat every 365 days, I have no idea, but if the sun has epicycles, then it must get cooler when the sun in further away on it's epicycle. But I don't see the sun wobbling around in epicycles or doing loop-de-loops, so the most economical explanation is that the goddess of spring and fertility is on vacation in the underworld, which not by experience, but by necessary logic is on the flip side of the land we are standing on right now. And while I'm on the topic, "ma" would make a good word for discus, because obviously the land we stand on is a flat round discus, which would be handy because it would free up "sike" to mean only hoops, donuts, toruses and abstract circles.
So sun-circle meaning day is geocentric, but year in heliocentric. That said, I will concede that with any pair of words related by a universal relationship (which is pretty much what is indicated between head nouns and their modifiers), then all sorts of things can be implied-- round suns, spherical suns, the circles that a sun moves across, the time it takes to move around the sun, the circles left by the solar disk as it rolls through the black mud of the sky, the time it takes for the sun to spin on it's own axis, etc.
Finally found one ref that discusses seasons from the geocentric perspective-- the sun was attached to two rotating spheres...I can't even visualize what they had in mind.http://www.bookrags.com/research/geocentric-theory-wop/