The "Feast of the Circumcision of Our Lord Jesus Christ" (or
"Circumcision OLJC" or the "Circumcision of Christ") was a Roman
Catholic Christian holiday that used to occur every year on January
1. Following the Second Vatican Council (Vatican II) in the 1960s,
January 1 became the "Solemnity of Mary, Mother of God." The Feast
of the Circumcision of Christ is also the Octave Day of Christmas,
meaning it is the 8th day after Christmas. On January 1, the Feast
of the Circumcision, Roman Catholic churches would have a Mass. It
was a Holy Day of Obligation, mean that all Catholics had to go to
Mass on that day. Special prayers are said that commemorate that
Christ's blood was first shed at his circumcision, foreshaddowing
the blood he would shed at his crucifixion. Today, January 1 is the
Solemnity of Mary, Mother of God. It still is a Holy Day of
Obligation, and all Catholics must go to Mass.