GAHANBAR, festivals of the ancient Avesta calendar cele brated by the Parsees at six seasons of the year which correspond with the six periods of creation : Maidhyozarernaya (mid spring), (2) Maidhyoshema (midsummer), (3) Paitishahya (crea tion of the earth), (4) Ayathrema (creation of plants), (5) Maidhyarya (winter solstice), (6) Hamaspathmaedha (festival of sacrifices).