ὑποθέσθαι

From LSJ

νύκτα οὖν ἡμέραν ποιούμενος → without delay, as soon as possible, as fast as possible, making the night day, making night into day, turning night into day

Source

Greek Monotonic

ὑποθέσθαι: απαρ. Μέσ. αορ. βʹ του ὑπο-τίθημι.