Easter Sunday 1965 fell on 18 April 1965 (fixed calendar fact); internally corroborated across the corpus by passage 527067 (nid 101, delivered 1965-04-13: 'you'll find them right there on Fifth Avenue this coming Sunday'), passage 532875 (nid 1200, delivered 1965-04-16: 'this coming Sunday in the eyes of Christendom'), and passage 547328 (nid 1864, delivered 1965-03-23: Easter approaching).