I have a question about what one might call "scientific astrology."
You suggest that personality might be dependent on the time of year at which one is born, but for reasons other than the positions of the stars. That's a reasonable hypothesis with various possible mechanisms (you suggest the annual cycles of indoor and outdoor living plus some unstated human developmental mechanisms that are sensitive to external climate during specific intervals in infancy). No such mechanisms have been detected yet, but they shouldn't be ruled out a priori. But why call this theory "scientific astrology"? It has very little in common with astrology, which, at the very least, is about the influence of stars on human lives. They simply make some of the same predictions.