December 8 normally marks the Feast of the Immaculate Conception. For 2013, it's observed Monday, Dec. 9 because the 8th fell on Sunday. Immaculate Conception is one of six recognized Holy Days in the liturgical calendar. Here are free printable activities and lessons to celebrate this feast day. I've gone through all the noted Catholic websites and linked this article to children's liturgy activities that explore the Feast of the Immaculate Conception of Our Blessed Mother. Free Printable 'Feast of the Immaculate Conception' Activities