Originally seasons were mostly based around hunting or farming timetables. You could base seasons around celestial orbits. You could also base them much more locally. The idea of "winter" in a tropical or mediterranean climate doesn't really make sense. In those climates you have wet and dry seasons. Since the temperature is so consistent precipitation is all you really need to track. However, in climates like the US east coast its important to track precipitation and temperature. Instead of wet and dry you have freeze, thaw, hot and humid, and frost. Each with different implications for wildlife and agriculture.

I don't really see how the tracking of celestial bodies is practical for most people. Given that the effects of those orbits is so different in different areas.