Venerable Alexander, founder of the monastery of the Sleepless Ones.
St. Alexander was a monk of the early fifth century who established communities in Syria and later near Constantinople in which the brethren, divided into choirs, kept up unceasing praise of God by day and night; from this they were called the Akoimetoi, the Sleepless Ones.
He reposed in peace around 430 and is commemorated on January 15.
Feast day
On the New Calendar, Alexander the Akoimetos is commemorated on January 15. Churches on the Old (Julian) Calendar keep the feast on January 28 of the civil calendar.
Also commemorated on January 15

John the Kalyvites
Venerable, Ιωάννης ο Καλυβίτης
Venerable John the Hut-Dweller, who lived unknown at his parents' gate.