Holy Martyrs Gaius, Dasius and Zotikos, drowned at Nicomedia.
Gaius, Dasius and Zotikos were Christians of Nicomedia who in the persecution of Diocletian destroyed a pagan temple. Seized and tortured, they refused to deny Christ.
They were bound with stones and drowned in the sea around 303, receiving the crown of martyrdom.
Feast day
On the New Calendar, Gaius, Dasius and Zotikos is commemorated on October 21. Churches on the Old (Julian) Calendar keep the feast on November 3 of the civil calendar.
Also commemorated on October 21

Hilarion the Great
Venerable, Ιλαρίων
Venerable Hilarion the Great, father of Palestinian monasticism.
Philotheos of Athos
Venerable, Φιλόθεος ο Αγιορείτης
Venerable Philotheos of Dionysiou, ascetic of Mount Athos.
Name days: Philotheos, Filotheos, Philotheus
Theodote and Socrates
Holy Woman, Θεοδότη και Σωκράτης
Holy Martyrs Theodote and Socrates the Presbyter of Ancyra.
John of Monemvasia
Martyr, Ιωάννης ο εκ Μονεμβασίας
Holy New Martyr John of Monemvasia, who died for Christ in Larissa in 1773.
Christodoulos of Patmos (Translation of Relics)
Venerable, Χριστόδουλος ο εν Πάτμω
Translation of the relics of Venerable Christodoulos, founder of the Monastery of Saint John on Patmos.
Ursula the Virgin
Holy Woman, Ούρσουλα
Holy Virgin Martyr Ursula of Cologne and her companions.
Name days: Ursula