Akademik

moveable feast
noun
a religious holiday that falls on different dates in different years
Syn: ↑movable feast
Hypernyms: ↑feast day, ↑fete day
Hyponyms: ↑Easter, ↑Passover, ↑Pesach, ↑Pesah, ↑Feast of the Unleavened Bread

Useful english dictionary. 2012.