paschal
adjective /ˈpɑːskl/
  /ˈpæskl/
(formal)- relating to Easter
 - relating to the Jewish Passover
 
Word Originlate Middle English: from Old French, from ecclesiastical Latin paschalis, from pascha ‘feast of Passover’, via Greek and Aramaic from Hebrew Pesaḥ ‘Passover’.