Venerable Michael the Synkellos, Confessor, of Jerusalem and Constantinople.
Venerable Michael was born in Jerusalem in the eighth century and became a monk and later synkellos of the Patriarch of Jerusalem. Sent to Constantinople, he confessed the veneration of the holy icons before the iconoclast emperors and endured prison and exile.
After the restoration of the icons he was made abbot of the monastery of Chora, where he reposed in peace in 846.
Feast day
On the New Calendar, Michael the Synkellos is commemorated on December 18. Churches on the Old (Julian) Calendar keep the feast on December 31 of the civil calendar.
Also commemorated on December 18

Sebastian
Martyr, Σεβαστιανός
Holy Martyr Sebastian of Rome.
Name days: Sebastianos, Sebastian, Bastian
Companions of Sebastian
Martyr, Νικόστρατος, Ζωή, Τραγκυλίνος και οι συν αυτοίς
Holy Martyrs Nikostratos, Zoe, Tranquillinus, Marcia, Castorius, Claudius, Tiburtius, Castulus, Marcellinus and Mark, who suffered with Saint Sebastian.
Zacchaeus and Alphaeus
Martyr, Ζακχαίος ο Διάκονος και Αλφειός ο Αναγνώστης
Holy Martyrs Zacchaeus the Deacon and Alphaeus the Reader, at Caesarea in Palestine.
Daniel the Hesychast
Venerable, Δανιήλ ο Ησυχαστής
Venerable Daniel the Hesychast of Voronet in Moldavia.