December 4 (Eastern Orthodox liturgics) - Wikipedia
https://en.wikipedia.org/wiki/December_4_(Eastern_Orthodox_liturgics)
Dec 3 - Eastern Orthodox Church calendar - Dec 5. All fixed commemorations below celebrated ... Venerable Cassian the Martyr (Kassianos), one of the "300 Allemagne Saints" in Cyprus (late 12th century) (see also October 6); Saint Gennadius of Novgorod, Archbishop of Novgorod (1504); New Hieromartyr Seraphim of ...
September 28 (Eastern Orthodox liturgics) - Wikipedia
https://en.wikipedia.org/wiki/September_28_(Eastern_Orthodox_liturgics)
Included among the "300 Allemagne Saints" are: Venerable Anastasios the Wonderwoker of Cyprus, September 17. Venerable Abbacum the Ascetic of Cyprus, Wonderworker, December 2. Venerable Cassian the Martyr (Kassianos), December 4. Venerable Calantius of Tamassos (Kalandios), April 26.