At the end of which season the daughters of Airitech would come out of the Cave of Cruachan every year?
Samhain Samhain (pronounced or , ] ) is a Gaelic festival marking the end of the harvest season and the beginning of winter or the "darker half" of the year. Traditionally, it is celebrated from 31 October to 1 November, as the Celtic day began and ended at sunset. This is about halfway between the autumn equinox and the winter solstice. It is one of the four Gaelic seasonal festivals, along with Imbolc, Bealtaine and Lughnasadh. Historically, it was widely observed throughout Ireland, Scotland and the Isle of Man. Similar festivals are held at the same time of year in other Celtic lands; for example the Brythonic Calan Gaeaf (in Wales), Kalan Gwav (in Cornwall), and Kalan Goañv (in Brittany).
Skira The festival of the Skira or Skirophoria in the calendar of ancient Athens, closely associated with the Thesmophoria, marked the dissolution of the old year in May/June. At Athens, the last month of the year was "Skirophorion", after the festival. Its most prominent feature was the procession that led out of Athens to a place called Skiron near Eleusis, in which the priestess of Athena and the priest of Poseidon took part, under a ceremonial canopy called the "skiron", which was held up by the "Eteoboutadai". Their joint temple on the Acropolis was the Erechtheum, where Poseidon embodied as Erechtheus remained a numinous presence.