Saints Nektarios, Arsakios and Sisinios, Patriarchs of Constantinople.
Nektarios, a senator of Tarsus, was chosen Patriarch while still a catechumen and presided at the Second Ecumenical Council in 381, reposing in 397. Arsakios, the brother of Nektarios, briefly held the throne after the exile of Saint John Chrysostom.
Sisinios, Patriarch from 426 to 427, was renowned for his almsgiving and purity of life. The Church commemorates the three hierarchs together.
Feast day
On the New Calendar, Nektarios, Arsakios and Sisinios of Constantinople is commemorated on October 11. Churches on the Old (Julian) Calendar keep the feast on October 24 of the civil calendar.
Also commemorated on October 11

Fathers of the Seventh Ecumenical Council
Saint, Ζ' Οικουμενική Σύνοδος
Commemoration of the Holy Fathers of the Seventh Ecumenical Council at Nicaea, which upheld the veneration of the holy icons.
Theophanes the Branded
Hierarch, Θεοφάνης ο Γραπτός
Saint Theophanes the Confessor and Hymnographer, Bishop of Nicaea, called the Branded.
Name days: Theophanis, Theofanis, Theophanes, Fanis, Phanis
Zenaida and Philonilla
Holy Woman, Ζηναΐδα και Φιλονίλλα
Holy Women Zenaida and Philonilla of Tarsus, physicians and kinswomen of the Apostle Paul.
Name days: Zenaida, Zinaida, Zina, Zenais, Philonilla
Philotheos Kokkinos
Hierarch, Φιλόθεος ο Κόκκινος
Saint Philotheos Kokkinos, Patriarch of Constantinople, defender of the hesychasts.
Jonas of Pergamos
Venerable, Ιωνάς ο εν Περγάμω
Venerable Jonas of Pergamos in Cyprus, disciple of Saint John Lampadistis.