Guadalupe, Mexico (1531) Title : Our Lady of Guadalupe Feast Day : December 12th Investigated : 1666, 1723 First Apparition : Dec 9, 1531 Approved : 1555 by Archbishop Alonso de Montúfar (1551-1572) Last Apparition : Dec 12, 1531 Visionaries : St. Juan Diego (57), Juan Bernardino Number of Apparitions : 5 Miracles &Signs : Tilma of Juan Diego with imprint of image of Virgin ; conversion of milli..