Holy Prophet Aaron, brother of Moses and first high priest of Israel.
The holy prophet Aaron was the elder brother of Moses and his spokesman before Pharaoh, and by God's command he was consecrated the first high priest of Israel. His rod that budded was kept in the Ark of the Covenant, and the Church sees in it a figure of the Mother of God.
He died on Mount Hor before the entry into the Promised Land. The Greek synaxarion keeps his memory on March 12.
Feast day
On the New Calendar, Aaron the Prophet is commemorated on March 12. Churches on the Old (Julian) Calendar keep the feast on March 25 of the civil calendar.
Also commemorated on March 12

Theophanes the Confessor
Venerable, Θεοφάνης
Venerable Theophanes the Chronographer.
Name days: Theofanis, Theophanis, Theophanes
Gregory the Dialogist
Hierarch, Γρηγόριος ο Διάλογος
Saint Gregory the Dialogist, Pope of Rome, to whom the Presanctified Liturgy is ascribed.
Symeon the New Theologian
Venerable, Συμεών ο Νέος Θεολόγος
Venerable Symeon the New Theologian, mystic and hymnographer of the light of God.
Demetrios of Georgia
Saint, Δημήτριος της Γεωργίας
Righteous King Demetrios the Self-Sacrificing of Georgia.