June 28 (Eastern Orthodox liturgics)
- Eastern Orthodox Church calendar - June 29
All fixed commemorations below celebrated on July 11 by Orthodox Churches on the Old Calendar.
For June 28th, Orthodox Churches on the Old Calendar commemorate the Saints listed on June 15.Saints
- Martyrs Plutarch, Serenus, Heraclides, Heron, Iraida, Potamiœna and her mother Marcella, at Alexandria, under Septimius Severus
- Hieromartyr Donagus, Bishop of Libya, by fire.
- Martyr Macedonius.
- The holy Two Children, who were crucified.
- The holy Three Martyrs of Galatia, by the sword.
- The holy 70 Martyrs of Scythopolis, by the sword.
- Venerable Magnus, who reposed while praying to the Lord.
- Venerable Moses the Anchorite.
- Saint Vulkian, monk.
- Saint Sennuphius the Standard-bearer, of Egypt
- Saint Paul the Physician, of Corinth
- Saint Sergius the Magistrate, of Paphlagonia, founder of the Nikitiatus Monastery in Nicomedia
Pre-Schism Western saints
- Saint Irenaeus of Lyons, a Greek cleric noted for expanding Christian communities in France, combatting heresy and defining Orthodoxy
- Martyr Pappias, possibly in Sicily, under Diocletian, by beheading
- Saint Crummin of Lecua, a disciple of St Patrick at Leccuine in Westmeath in Ireland
- Saint Austell of Cornwall
- Saint Benignus, Bishop of Utrecht in Holland
- Saint Theodichildis, a nun at Faremoutiers Abbey in France, she became the first Abbess of Jouarre
- Saint Argymirus of Córdoba, martyr
- Saint Egilo, a monk and later Abbot of Prüm near Trier in Germany
- Saint Heimerad, a priest at Baden in Germany who after many pilgrimages lived as a monk at Hersfeld Abbey and then as a hermit at Hasungen in Westphalia
Post-Schism Orthodox saints
- Venerable Xenophon of Robeika, founder of Robeika Monastery, Novgorod
- Saints Sergius and Herman, founders and abbots of Valaam Monastery, Wonderworkers
- Saint Heliodorus, Schema-Archimandrite of Glinsk Hermitage
- New Hieromartyr Basil Sitnikov, Deacon
- Virgin-martyr Sebastiana Ageyev-Zueva
- New Hieromartyr Gregory Samarin, Deacon
Other commemorations
- Translation of the relics of the Holy Wonderworking Unmercenaries and Martyrs Cyrus and John
- Synaxis of the Icon of the Most Holy Theotokos "Of the Three Hands" of Hilandar, Mt. Athos
- Repose of Archimandrite Sophrony of Essex
- Repose of Archimandrite Methodius of Jerusalem
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