July 13 Fast Synaxis of the Archangel Gabriel. Ven. Stephen of St. Sabbas’ Monastery (794). St. Julian, Bishop of Cenomanis (Le Mans) in Gaul (1st c.). Martyr Serapion (2nd-3rd c.). Martyr Marcian of Iconium (258). Icon of the Most-holy Theotokos “AXION ESTIN” (“IT IS TRULY MEET”). HlOLY ARCHANGEL GABRIEL The Synaxis of the Archangel Gabriel is celebrated on the day after the Annunciation, and a second time on July 13.