Besides a feria day in Advent, today is the Commemoration of St. Sabbas the Abbot.
The website TRADITIONAL LATIN MASS PROPERS IN ENGLISH says of St. Sabbas: "When Sabbas (439-532), a native of Cappadocia, was twenty years old, he became a disciple of the great solitary, St. Euthymius, in the Judean wilderness. On the death of Euthymius, Sabbas was made leader of the solitaries by the appointment of the patriarch of Jerusalem. Several times he left his loved solitude to intervene with the Emperors of the East for the liberty and welfare of the Church. Venerated for his holiness, Sabbas died on December 5, 532 A.D., at the age of 93."
Let the Blessed abbot Sabbas intercede for us, O Lord. May his prayers win us Your help, since our own actions cannot merit it. Through Our Lord . . .