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
fĭlāmĕn, ĭnis, n., c. flamen 1 : Varro L. 5, 84 ; Prisc. Gramm. 4, 17.
filāmen, s. 1. flāmen.