Christmas is one of the most important days of the Church year, second only to Easter itself. It is the feast of the incarnation, the feast of God becoming flesh (the Latin "in carne" means "enfleshment"). It is a uniquely Christian teaching, the Divine choosing to become one of us.
Because of this belief, God is not only Transcendent, but also wholly Immanent, Emmanuel (God-with-us). While remaining Transcendent (meaning we must rise above our present condition to reach Him), He is at the same time Immanent (meaning He is with us as we rise toward Him). Every Eucharist is like Christmas where the bread and wine are transformed into His flesh, His Body and Blood, and, in a sense, He is born anew on the altar.
The liturgical season of Christmas begins with the vigil Masses on Christmas Eve and concludes on the Feast of the Baptism of the Lord. During this season, we celebrate the birth of Christ into our world and into our hearts, and reflect on the gift of salvation that is born with him…including the fact that he was born to die for us.
Christmas Day December 25
Feast of the Holy Family December 27
Feast of the Holy Innocents December 28
Solemnity of Mary the Mother of God January 1
Most Holy Name of Jesus January 3
The Epiphany of the Lord January 3
The Baptism of the Lord January 10