St. Edward Campion, Martyr-------December 1
St. Bibiana [Vivian], Martyr-------December 2
St. Francis Xavier-------December 3
St. Barbara, Martyr-------December 4
St. Peter Chrysologus-------December 4
St. Sabbas, Abbot-------December 5
St. Nicholas of Bari-------December 6
St. Ambrose-------December 7
St. Juan Diego-------December 9
St. Leocadia-------December 9
Pope St. Melchiades, Martyr-------December 10
Pope St. Damasus-------December 11
St. Lucy, Martyr-------December 13
Sts. Nicasius, Eutropia and Companions, Martyrs-------December 14
St. Christiana-------December 15
St. Eusebius, Martyr-------December 16
St. Alice-------December 16
Sts. Ananias, Azarias, and Misael, Martyrs-------December 16
St. Lazarus-------December 17
Bl. Pope Urban V-------December 19
St. Dominic of Silos-------December 20
 Vigil of St. Thomas, Apostle-------December 20
St. Thomas, Apostle-------December 21
St. Zeno-------December 22
St. Flavian-------December 22
St. Yvo of Chartres-------December 23
Sts. Adam and Eve-------December 24
St. Stephen, First Martyr-------December 26
St. John the Evangelist, Apostle-------December 27
The Holy Innocents -------December 28
St. Thomas Becket, Martyr-------December 29
St. David, King-------December 29
St. Sabinus-------December 30
Pope St. Sylvester-------December 31
St. Catherine Laboure-------December 31