septimanarius
From LSJ
μηδενὶ συμφορὰν ὀνειδίσῃς, κοινὴ γὰρ ἡ τύχη καὶ τὸ μέλλον ἀόρατον → never mock a disaster, fate is common to all and the future unknown
septimānārius, a, um (septimana), die Wochentage betreffend, per septimanas et decadas septimanarias, Augustin. serm. 99, 2 Mai.