Saints of 21 December
The feast, the saints of the day, and the Roman Martyrology for 21 December.
Feasts in 2026
Monday 21 December 2026.
- Ordinary Form: Weekday in Advent. Feria, violet. Also kept: St Peter Canisius.
- 1962 calendar: St. Thomas the Apostle. Second class, white.
Feasts that depend on the date of Easter fall on a different day each year.
Saints of the day
- St Peter Canisius. Jesuit Doctor of the Reformation era.
Roman Martyrology
St Thomas the Apostle
At Calamina, the birthday of the blessed apostle Thomas, who preached the Gospel to the Parthians, the Medes, the Persians and Hyrcanians. Having finally penetrated into India, and instructed those nations in the Christian religion, he died transpierced with lances by order of the king. His remains were first taken to the city of Edessa and then to Ortona.
Ss. John and Festus
In Tuscany, the holy martyrs John and Festus.
St Themistocles of Lycia
In Lycia, St. Themistocles, martyr, who under the emperor Decius, offered himself in the place of St. Dioscorus, who was sought after to be killed, and being racked, dragged about and beaten with rods, obtained the crown of martyrdom.
St Glycerius of Nicomedia
At Nicomedia, during the persecution of Diocletian, St. Glycerins, a priest, who was subjected to many torments, and finally completed his martyrdom by being cast into the flames.
St Anastasius of Antioch
At Antioch, St. Anastasius, bishop and martyr, who was cruelly murdered by the Jews during the reign of Phocas.
St Severin of Trier
At Treves, St. Severin, bishop and confessor.
From the 1916 English edition of the Roman Martyrology, which is in the public domain. Saints canonised since then are added with a short note.
Gianna can send the day's feast and saints each morning, following the calendar you use. See a daily Catholic routine.