Overview of Orthodox Church commemorations for May 13 and May 15

The Orthodox Church commemorates specific figures on May 13 and May 15. On May 13, the Church honors Saint Glykeria the Martyr and Saint Sergius the Confessor, along with Saint Euthymius the New, founder of the Iveron Monastery on Mount Athos, Saint Laodicius, Saint Pausicacus of Synnada, Saint Alexander the Martyr, Saint Nicephorus the Priest, and the Iverite martyr monks. May 13 also marks the name day for those named Glykeria, Sergius, Sergia, Sergiani, and Sergioula. On May 15, the Church commemorates Saint Pachomius the Great, known as the founder of coenobitic monasticism, born in 292 in Upper Thebaid, Egypt. Additionally, May 15 honors Saint Achillius, Bishop of Larissa, who participated in the First Ecumenical Council of Nicaea in 325 AD and defended orthodox faith against Arianism. Saint Achillius is the patron saint of Larissa, and his relics were moved to a lake island in Prespa. The martyr Saint Kali is also recognized in the liturgical calendar on May 15. These dates reflect traditional ecclesiastical history and liturgical records.