The month of October is dedicated to the Holy Rosary of the Blessed Virgin Mary, with the feast of Our Lady of the Rosary falling on October 7. Following the Christian naval victory over the Ottoman fleet at the Battle of Lepanto on October 7, 1571—a victory attributed to Mary’s intercession amid widespread prayer of the Rosary—Pope Saint Pius V established the feast of Our Lady of Victory. In 1573, Pope Gregory XIII changed its title to the Feast of Our Lady of the Rosary. Pope Clement XI thenextended the celebration to the universal Church in 1716, and Pope Saint Pius X fixed its date as October 7 in 1913. The entire month of October was dedicated to the Holy Rosary by Pope Leo XIII in his 1883 encyclical Supremi Apostolatus Officio (The Supreme Apostolic Office).