 In Athens, the Thesmophoria took place over three days, from the eleventh to the thirteenth of Pyanepsion.This corresponds to late October in the Gregorian calendar, and was the time of the Greek year when seeds were sown.The Thesmophoria may have taken place in this month in other cities, though in some places – for instance Delos and Thebes – the festival seems to have taken place in the summer, and been associated with the harvest, instead.