January 1
Solemnity of Mary, the Holy Mother of God is invoked as patron of mothers. The Solemnity of Mary, the Holy Mother of God, falls on January 1, the Octave Day of the Nativity of the Lord. It is a Holyday of Obligation in the Latin Church and the principal Marian feast of the Roman Calendar, honoring the divine maternity of the Blessed Virgin Mary under the title Theotokos, "God-bearer."The dogmatic foundation of the feast is the definition of the Council of Ephesus (431), which condemned Nestorius and taught that the one Christ is true God and true man, so that Mary, who bore him in the flesh, is rightly called Mother of God. Sources: https://www.vatican.va/archive/hist_councils/ii_vatican_council/documents/vat-ii_const_19641121_lumen-gentium_en.html.
Read full biography of Solemnity of Mary, the Holy Mother of God →