Dec. 8 marks the Feast of the Immaculate Conception in the Catholic liturgical calendar. Catholics believe that the Blessed Virgin Mary was preserved from original sin so that she could birth the Messiah, Jesus. Catholics honor her on this day. Here are activities for parents and children to celebrate the Feast of the Immaculate Conception and Advent, a Christmas preparatory season during which the feast falls. Use these free printable lessons for family devotions, church activities and school feast day observances. read more