Venerable Mercurius the Faster of the Kiev Caves Lavra.
Venerable Mercurius was a monk of the Kiev Caves Lavra who lived in the fourteenth century and is remembered for his strict fasting. His relics rest in the Far Caves of the Lavra.
He is commemorated in the Russian calendar both on this day and on November 24.
Feast day
On the New Calendar, Mercurius the Faster of the Kiev Caves is commemorated on November 4. Churches on the Old (Julian) Calendar keep the feast on November 17 of the civil calendar.
Also commemorated on November 4

Ioannikios the Great
Venerable, Ιωαννίκιος ο Μέγας
Venerable Joannicius the Great.
Name days: Ioannikios
Nicander of Myra and Hermaeus
Hierarch, Νίκανδρος και Ερμαίος
Hieromartyrs Nicander, Bishop of Myra, and Hermaeus the Presbyter, ordained by the Apostle Titus.
Porphyrios the Mime
Martyr, Πορφύριος ο Μίμος
Holy Martyr Porphyrios the actor, who was converted while mocking Baptism on stage.
John Vatatzes the Merciful
Saint, Ιωάννης Βατάτζης ο Ελεήμων
Saint John III Doukas Vatatzes, the merciful Emperor of Nicaea.
George Karslidis
Venerable, Γεώργιος Καρσλίδης
Venerable George Karslidis the Confessor, elder of the Ascension monastery at Sipsa, Drama.