Transfiguration (or Jesus) day
was kept in the Western Church in the time of St. Leo, and in the Greek Church about A.D. 700. By a bull of Calixtus III, 1456 (or 1457), it was ordered to be generally observed, in memory of the victory of Hunniades and the Hungarian army over Mohammed and the Turks. In the English calendar it stands on Aug. 6. In France, after consecration, the chalice was filled with new wine, or, as at Tours, received some of the juice of the ripe grapes; and the clusters are blessed in Germany and the East on this day. Blunt, Dict. of Theol. s.v.; Walcott, Sac. Archaeol. s.v.