Why is the ninth month called September?
early 15c., "of or pertaining to Easter," from Old French paschal (12c.) and directly from Late Latin paschalis, from pascha "Passover, Easter," from Greek pascha "Passover," from Aramaic pasha "pass over," corresponding to Hebrew pesah, from pasah "he passed over." (cf. Passover). Pasche was an early Middle English term for "Easter" (see Easter).