Feast of the Circumcision of Christ of Jesus. Pope John XXIII's 1960 rubrical and calendrical revision called 1 January simply the Octave of the Nativity. (This 1960 calendar was incorporated into the 1962 Roman Missal, whose continued use is authorized by the motu proprio "Summorum Pontificum".) The 1969 revision states: "1 January, the Octave Day of the Nativity of the Lord, is the Solemnity of Mary, the Holy Mother of God, and also the commemoration of the conferral of the Most Holy Name of Jesus." The Anglican communion's "Book of Common Prayer" liturgy celebrates this day as the Circumcision of Christ. Since 2000, the "Common Worship"
Feast of the Circumcision of Christ 1). On the Julian calendar, 1 January will correspond, until 2100, to 14 January on the Gregorian Calendar. Accordingly, in Russia, 14 January in the civil calendar is known as "The Old New Year", since it corresponds to 1 January in the Julian Calendar, still used by the Church. At an early stage the Church in Rome celebrated on 1 January a feast that it called the anniversary ("Natale") of the Mother of God. When this was overshadowed by the feasts of the Annunciation and the Assumption, adopted from Constantinople at the start of the 7th century, 1 January began