Most of these sites have astronomical/calendrical orientation. I would say the definition of trade has to include knowledge and techniques. I can imagine a cult

Most of these sites have astronomical/calendrical orientation. I would say the definition of trade has to include knowledge and techniques. I can imagine a culture developing a steady state around the seemingly consistent movement of celestial objects and slowly losing it’s cultural center has things shifted. I find interesting that astrology is based on the rising of the sun in position of the planets which is distinct from a lunar calendar. What sort of cultural shift would that change create?