Holy Apostles Mark, Aristarchos and Zenon of the Seventy.
St. Mark, called also John, is the kinsman of Barnabas named in the Acts and the Epistles; St. Aristarchos was the Apostle Paul's fellow prisoner and, tradition holds, bishop of Apamea in Syria; St. Zenon is the lawyer whom Paul commends to Titus, and is said to have been bishop of Diospolis.
All three are numbered among the Seventy and are commemorated together on September 27.
Feast day
On the New Calendar, Mark, Aristarchos and Zenon the Apostles is commemorated on September 27. Churches on the Old (Julian) Calendar keep the feast on October 10 of the civil calendar.
Who celebrates a name day
People with these names keep their name day on this feast:
Also commemorated on September 27

Kallistratos
Martyr, Καλλίστρατος
Holy Martyr Callistratus and 49 companions.
Name days: Kallistratos, Callistratus
Akylina of Zagliveri
Holy Woman, Ακυλίνα
New Martyr Akylina of Zagliveri near Thessaloniki, virgin martyr.
Ignatius of the Monastery of the Savior
Venerable, Ιγνάτιος ο Ηγούμενος
Venerable Ignatius, abbot of the Monastery of Christ the Savior in Cappadocia.
Peter of Krutitsa
Hierarch, Πέτρος Κρουτίτσης
Hieromartyr Peter of Krutitsa, locum tenens of the Patriarchal throne of Moscow, martyred in 1937.
Sabbatius of Solovki
Venerable, Σαββάτιος του Σολοβέτσκ
Venerable Sabbatius, wonderworker of Solovki, first hermit of the White Sea island.