The Synaxis of the Archangel Gabriel is celebrated on the day after the Annunciation, and a second time on July 13. It was instituted in the ninth century, perhaps to celebrate the dedication of a church at Constantinople. Originally, the Feast was observed on October 16 (Juan Mateos, Le Typikon De La Grande Eglise).
An account of the Holy Archangel Gabriel is found under March 26 and November 8.
It is believed that the Synaxis of the Archangel Gabriel was transferred to this day from March 26 so that it could be celebrated more festively than in the period of the Great Fast; and, in fact, all the miracles of the Archangel are celebrated on this feast day, which has been listed here in the church books since the ninth century.
