The Feast of the Most Holy Name of the Blessed Virgin Mary is an optional memorial celebrated in the liturgical calendar of the Catholic Church on 12 September. It has been a universal Roman Rite feast since 1684, when Pope Innocent XI included it in the General Roman Calendar to commemorate the victory at the Battle of Vienna in 1683.[1] It was removed from the Church calendar in the liturgical reform following Vatican II but restored by Pope John Paul II in 2002, along with the Feast of the Holy Name of Jesus.
Within the Eastern Orthodox Church, the feast is celebrated on 7 September in the Antiochian Western Rite Vicariate.[2]