The Transfiguration, which is among the most prominent feasts of the Orthodox calendar, has been somewhat neglected in Western Christianity. Most of the faithful only encounter this feast every seven years or so, when the appointed day, the 6th of August, falls on a Sunday. The feast has been raised in public consciousness by its inclusion among the Luminous Mysteries, which Pope John Paul II instituted in his apostolic letter Rosarium Virginis Mariae.