See Betimes.

In the New Testament orthros, is properly "dawn," and is used for early morning (Joh 8:2; Ac 5:21), and

signifies the same (Mt 27:1). proi, "early," is an adverb and means early in the morning (Mr 1:35). Morning as an adjective is orthrinos (Re 22:16), or proinos (1 Esdras 1:11; 5:50; Re 2:28; 22:16).

See Astronomy, sec. I, 8; I, 7; I, 9.