Ypati is a village and a former municipality in Phthiotis, Greece. The three Saints of Ypati are:
1. Holy Apostle Herodian, founder of the Church of Ypati, and who was martyred in Ypati (see Mar. 28 and Nov. 10).
2. Hieromartyr Gregory, Bishop of New Patras, who was slain during the Divine Liturgy in the Sacred Church of Saint Nicholas in Ypati, on the eve of the Akathist Hymn in the year 1711 (see the Sunday between Mar. 18 and 24).
3. Saint Athanasios, founder of the Monastery of Great Meteoron (see Apr. 20).
By decision of His Eminence Metropolitan Nicholas of Fthiotida, the feast day for the three Saints was established for the first Sunday after the feast of the Leave-taking of the Dormition of the Most Holy Theotokos. The Service of Praise was composed by the parish priest of the Sacred Church of Saint Nicholas in Ypati, Protopresbyter Fr. Demetrios Karayiannis, and it was immediately issued by the Sacred Metropolis of Fthiotida with the approval of the Sacred Synod of the Church of Greece.