: St. Januarius Bishop and Companions Martyrs, Double. September 20 : St. Eustace and Companions Martyrs, Double, Commemoration of the Vigil. September 21 : St. Matthew Apostle and Evangelist, Double of the Second-Class. September 22 : St. Thomas of Villanova Bishop and Confessor, Double, Commemoration of Ss. Maurice and Companions Martyrs.