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
praerupta: ōrum, and praeruptus, a, um, v. praerumpo.
praerupta, ōrum, n., s. 1. praeruptus.
praerupta, orum. n. :: 危岌。巉巖之處