Posada December 16-24
Las Posadas is a nine-day celebration with origins in Spain, now celebrated chiefly in Mexico,Guatemala and parts of the Southwestern United States, beginning December 16 and ending December 24, on evenings (about 8 or 10 PM). It is a re enactment with songs and prayers of the journey of Joseph and Mary looking for an Inn. It can be done with just your family, or group of friends, or parish.
For a great introduction to this tradition and an actual program to be used, please go to this link
from the Knights of Columbus.