what is the name of the mexican christmas tradition commemorating joseph and mary

The Mexican Christmas tradition that commemorates Joseph and Mary's search for lodging is called "Las Posadas." It is celebrated from December 16 to December 24 and represents the nine months of Mary's pregnancy. During Las Posadas, people reenact the journey of Mary and Joseph as they go from house to house asking for a room, often being refused until they finally find lodging. This event concludes with prayers, singing, and festive celebrations including food and piñatas.