To defer anything to the Greek Calends is to defer it sine die. There were no calends in the Greek months. The Romans used to pay rents, taxes, bills, etc. , on the calends, and to defer paying them to the “Greek Calends” was virtually to repudiate them. (See NEVER. )
We are born at a given moment, in a given place and, like vintage years of wine, we have the qualities of the year and of the season of which we are born. Astrology does not lay claim to anything more.