In India, to this day, there are *six* seasons - Vasant (Spring), Grishma (Summer), Varsha (Monsoon), Sharad (Autumn), Hemant (no direct translation), and Shishir (Winter).
I hope this illustrates that, while seasons are ultimately based on astronomy, they are still human constructs.
Personally, I intellectually prefer the Chinese system because it's rigorous, but I do have an emotional and cultural attachment to the Celtic system.