Feast of the Circumcision of Christ to be celebrated simply as the octave day of Christmas, the "eighth day" on which, according to , the child was circumcised and given the name Jesus. In the 13th or 14th century 1 January began to be celebrated in Rome, as already in Spain and Gaul, as the feast of the Circumcision of the Lord and the Octave of the Nativity, while still oriented towards Mary and Christmas. The emphasis that Saint Bernardine of Siena (1380–1444) laid on the name of Jesus in his preaching led in 1721 to the institution of a separate Feast of the Holy Name
Calendar of saints completely removed, with the result that some saints have different feast days in different calendars. For example, St. Perpetua and Felicity died on 7 March, but this date was later assigned to St. Thomas Aquinas, allowing them only a commemoration (see Tridentine Calendar), so in 1908 they were moved one day earlier. When the 1969 reform of the Catholic calendar moved him to 28 January, they were moved back to 7 March (see General Roman Calendar). Both days can thus be said to be their feast day, in different traditions. The Roman Catholic calendars of saints in their various forms,