ἐν δὲ μηνὸς πρῶτον τύχεν ἆμαρ → it chanced to be on the first of the month, that day fell on the first of the month
ἀπόλουσις, ἀπολουσμός, διάνιψις, ἀπόσμηξις, βαπτισμός, ἀπόρρυψις