What feast day is celebrated on December 12?

The Feast of Our Lady of Guadalupe was raised to the status of a feast in all United States' dioceses in 1988. In 1910 she was declared the patroness of Latin America and in 1946 Pope Pius XII declared he to be the patroness of all the Americas.

On December 12, 1531, the Blessed Virgin appeared at Tepeyac, Mexico, to Juan Diego and requested that a church building be constructed at the site. Juan Diego visited Bishop Juan de Zumárraga the local bishop and carried with him a cloak upon which an image of the Blessed Virgin was inexplicable imprinted. In 1533 the church was build and in 1555 a feast was established to honor the church's patroness, Our Lady of Guadalupe.