The Octave Day of SS Peter and Paul is of double rite and its liturgical colour is red. Today is also the seventh Sunday after Pentecost and the Sunday is commemorated at Vespers, Mattins, Lauds and Mass.
At Vespers yesterday afternoon the antiphons Hoc est praeceptum meum etc, from the Common of Apostles, were sung, doubled, with psalms 109, 110, 111, 112 & 116. The Office hymn was Exsultet caelum laudibus. The versicle and its response, the antiphon on the Magnificat and collect were proper to the Octave Day. After the collect of the Octave Day a commemoration was sung of the Sunday. The Suffrages were omitted as were the Dominical preces at Compline.
At Mattins the invitatory is Regem Apostolorum Dominum, Venite adoremus and the Office hymn is Aeterna Christi munera. In the first nocturn the antiphons In omnem terram etc are sung with psalms 18, 33 & 44. The lessons are from the Sunday and are the the lessons are the Incipit of the Third Book of the Kings. The first lesson includes what is now most of the second lesson in the post-Clementine editions ending ...qui adjuvabant partes Adoniae. The second lesson begins Sadoc vero sacerdotes and continues (including verses 9 & 10 omitted in the modern editions) until ...et complebo sermones tuos, the penultimate sentence in modern third lesson. The third lesson begins Ingressa est itaque and continues until ...Nathan propheta venit, (v.22). The responsories in the three nocturns are from the Common of Apostles. In the second nocturn the antiphons Principes populorum etc are sung with psalms 46, 60 and 63 and the lessons are from a sermon of St. Chrysostom. These are the same as those found in the later editions. In the third nocturn the antiphons Exaltabuntur etc are sung with psalms 74, 96 & 98. The homily is from St. Jerome on St. Matthew's Gospel. Again these are the same as those found in the post-Clementine editions. Today the eighth and ninth lessons are read together to form an extended eighth lesson and the ninth lesson is formed from the three lessons given for the homily of the seventh Sunday after Pentecost. These lessons are from St. Hiliary on St. Matthew's Gospel. They are the same as those found in the later books. The Te Deum is sung.
At Lauds the antiphons Hoc est praeceptum meum etc are sung, doubled, with the Dominical psalms 92, 99, 62-66, Benedicite, 148-149-150. The Office hymn is Exsultet caelum laudibus. After the collect of the feast a commemoration of the Sunday is sung. The Suffrages are omitted.
At Prime and the Hours the antiphons from Lauds are sung in the usual order. At Prime the lectio brevis is Ibant Apostoli etc.
Mass is sung after Terce. The Gloria is sung, the second collect is of the Sunday, the Creed is sung, the preface is of the Apostles and the last Gospel is of the Sunday.
At second Vespers the antiphons Juravit Dominus etc, from the Common are sung with psalms 109, 112, 115, 125 and 138. The Office hymn is Aeterna Christ munera. After the collect of the Octave Day a commemoration of the Sunday is sung. The Suffrages are omitted as are the Dominical preces at Compline.