It's not an inertial reference frame, but I don't see anything wrong with choosing a reference frame where the earth is fixed, and noting that in such a referen

It's not an inertial reference frame, but I don't see anything wrong with choosing a reference frame where the earth is fixed, and noting that in such a reference frame, the sun does move around the earth, and can seen to go "past" the horizon? I mean that's just the title, but still.