Propers of the Saints — December
- St. Bibiana, Virgin and Martyr S. Bibianæ Virginis et Martyris (12-02)
- St. Peter Chrysologus, Bishop, Confessor and Doctor of the Church S. Petri Chrysologi Episcopi Confessoris et Ecclesiæ Doctoris (12-02pl)
- St. Francis Xavier, Confessor S. Francisci Xaverii Confessoris (12-03)
- St. Peter Chrysologus, Bishop, Confessor and Doctor of the Church S. Petri Chrysologi Episcopi Confessoris et Ecclesiæ Doctoris (12-04)
- St. Barbara, Virgin and Martyr S. Barbaræ Virginis et Martyris (12-04o)
- S. Barbaræ Virginis et Martyris (12-04pl)
- St. Sabbas, Abbot S. Sabbæ Abbatis (12-05)
- St. Nicholas, Bishop and Confessor S. Nicolai Episcopi et Confessoris (12-06)
- St. Ambrose, Bishop, Confessor and Doctor of the Church S. Ambrosii Episcopi Confessoris et Ecclesiæ Doctoris (12-07)
- Immaculate Conception of the Blessed Virgin Mary In Conceptione Immaculata Beatæ Mariæ Virginis (12-08)
- Immaculate Conception of the Blessed Virgin Mary Conceptione Beatæ Mariæ Virginis (12-08o)
- Second Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De II die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-09bmv)
- St. Juan Diego, Confessor S. Juan Diego (12-09n)
- Third Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De III die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-10bmv)
- St. Melchiades, Pope and Martyr S. Melchiadis Papæ et Martyris (12-10o)
- St. Damasus, Pope and Confessor S. Damasi Papæ et Confessoris (12-11)
- Fourth Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De IV die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-11bmv)
- Fifth Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De V die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-12a)
- Fifth Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De V die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-12bmv)
- Our Lady of Guadalupe Beatæ Mariæ Virginis de Guadalupe (12-12n)
- St. Lucy, Virgin and Martyr S. Luciæ Virginis et Martyris (12-13)
- Sixth Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De VI die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-13bmv)
- St. Lucy, Virgin and Martyr S. Luciæ Virginis et Martyris (12-13t)
- Seventh Day Within the Octave of the Immaculate Conception of the Blessed Virgin Mary De VII die Infra Octavam Immaculatæ Concept. Beatæ Mariæ Virginis (12-14bmv)
- Octave of the Immaculate Conception of the Blessed Virgin Mary In Octava Immaculatæ Concept. Beatæ Mariæ Virginis (12-15)
- St. Eusebius, Bishop and Martyr S. Eusebii Episcopi et Martyris (12-16)
- Vigil of St. Thomas the Apostle In Vigilia S. Thomæ Ap. (12-20o)
- St. Thomas the Apostle S. Thomæ Apostoli (12-21)
- Christmas Eve In Vigilia Nativitatis Domini (12-24)
- Christmas Eve In Vigilia Nativitatis Domini (12-24o)
- Vigil of the Nativity of Our Lord In Vigilia Nativitatis Domini (12-24s)
- Vigil of the Nativity of Our Lord In Vigilia Nativitatis Domini (12-24so)
- Nativity of Our Lord Jesus Christ In Nativitate Domini (12-25)
- Christmas Day, Mass at Midnight In Nativitate Domini in nocte (12-25m1)
- Christmas Day, Mass at Dawn In Nativitatis Domini in aurora (12-25m2)
- Christmas Day, Mass during the Day In die Nativitatis Domini (12-25m3)
- St. Stephen the First Martyr S. Stephani Protomartyris (12-26)
- St. John the Apostle, Evangelist S. Joannis Apostoli et Evangelistæ (12-27)
- St. John, Apostle S. Joannis Apostoli et Evangelistæ (12-27o)
- Holy Innocents Ss. Innocentium (12-28)
- Holy Innocents Ss. Innocentium (12-28o)
- St. Thomas of Canterbury, Bishop and Martyr S. Thomæ Cantuariensis Episcopi et Martyris (12-29)
- St. Thomas of Canterbury, Bishop and Martyr S. Thomæ Cantuariensis Episcopi et Martyris (12-29o)
- St. Sylvester, Pope and Confessor S. Silvestri Papæ et Confessoris (12-31)
- St. Sylvester, Pope and Confessor S. Silvestri Papæ et Confessoris (12-31o)