<P> Two separate accounts, one in Nahuatl from Juan Bautista del Barrio de San Juan from the 16th century, and the other in Spanish by Servando Teresa de Mier date the original apparition and native celebration on September 8 of the Julian calendar, but also note that the Spaniards celebrate it on December 12 instead . </P> <P> With the help of the Informaciones Jurídicas de 1666, a feast day in name of Our Lady of Guadalupe was requested and approved, as well as the transfer of the date of the feast of the Virgin of Guadalupe from September 8 to December 12, the latest date on which the Virgin supposedly appeared to Juan Diego . The initiative to perform them was made by Francisco de Siles who proposed to ask the Church of Rome a Mass itself with allusive text to the apparitions and stamping of the image, along with the divine office itself, and the precept of hearing Mass on December 12, the last date of the apparitions of the Virgin to Juan Diego as the new date to commemorate the apparitions (which until then was on September 8, the birth of the Virgin). </P> <P> In 1666, the Church in México began gathering information from people who reported having known Juan Diego, and in 1723 a formal investigation into his life was ordered, where more data was gathered to support veneration . Because of the Informaciones Jurídicas de 1666 in the year 1754, the Sacred Congregation of Rites confirmed the true value of the apparitions and granted celebrating Mass and Office for the feast of Guadalupe on December 12 . </P> <P> These published accounts of the origin of the image venerated in Tepeyac increased interest in the identity of Juan Diego, the original recipient of the vision . A new Basilica church was built to house the image . Completed in 1709, it is now known as the Old Basilica . </P>

When was the apparition of our lady of guadalupe approved