What is "break of day"

Usage examples of "break of day".

While the beggar himself emerged unharmed, at the break of day, to resume plying his pathetic trade.

I will do your bidding, and depart for the camp (but not till the break of day), while you, Antonina, remain in concealment and in safety here.

At night sometimes the roll of drums behind the curtain of trees would run up the river and remain sustained faintly, as if hovering in the air high over our heads, till the first break of day.

At break of day we used to go down to the river to bathe, brushing tall grass in our path still wet with dew, while above us hung the thin crescent moon which Bithynia takes for her emblem.