O caelestis norma vitae, doctor et dux, Benedicte, cujus cum Christo spiritus exsultat in caelestibus, gregem, pastor alme, serva, sancta prece corrobora, via caelos clarescente fac te duce penetrare. – O rule of the heavenly life, teacher and leader, whose spirit rejoiceth with Christ in heaven, Benedict, preserve thy flock, a kindly shepherd, strenghten it with thy holy prayer; lead it and bring into the heavens by the bright path. (The antiphon for the Magnificat at Second Vespers of the Solemnity of St Benedict.)
St Benedict died on March 21 in the year 543 or 547, and this was the date on which his principal feast was traditionally kept, and is still kept by Benedictines; it is sometimes referred to on the calendars of Benedictine liturgical books as the “Transitus - Passing.” There was also a second feast to honor the translation of his relics, which was kept on July 11. The location to which the relics were translated is still a matter of dispute, with the Abbey of Monte Cassino in Italy, founded by the Saint himself, and the French Abbey of Fleury, also known as Saint-Benoît-sur-Loire, both claiming to possess them. This second feast is found in many medieval missals and breviaries, even in places not served by monastic communities. (It was not, however, observed by either the Cistercians or Carthusians.). The second feast was in a certain sense the more solemn in the traditional use of the Benedictines; March 21 always falls in Lent, and the celebration of octaves in Lent was prohibited, but most monastic missals have the July 11 feast with an octave. In the post-Conciliar reform of the Calendar, many Saints, including St Benedict, were moved out of Lent; in his case, to the day of this second feast in the Benedictine Calendar.