μηνολόγιον
From LSJ
Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνον → Anaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep
Greek (Liddell-Scott)
μηνολόγιον: τό, ἡμερολόγιον, Στουδ. 28C, τὸ Ἐκκλ. ἔτος ἄρχεται ἀπὸ τῆς πρώτης Σεπτεμβρίου.
Wikipedia EN
Menologium (English: /mɛnəˈloʊdʒiəm/), also written menology, and menologe, is a service-book used in the Eastern Orthodox Church and those Eastern Catholic Churches which follow the Byzantine Rite.