'Day' in the Bible

Until the day breathes and the shadows flee, turn, my beloved! {Be like} a gazelle or {young stag} on the cleft mountains.

Come out and look, {O maidens of Zion}, at {King Solomon}, at the crown with which his mother crowned him on the day of his wedding, on the day of the joy of his heart!

Until the day breathes and the shadows flee, I will go to the mountain of the myrrh, to the hill of the frankincense.

{We have a little sister}, {and she does not yet have any breasts}. What should we do for our sister {on the day when she is betrothed}?