'Hour' in the Bible

So he inquired of them at what hour he had shown improvement. "Yesterday, about seven o'clock," they replied, "the fever left him."

Now is my soul full of trouble; and what shall I say? Father, save me from this hour. But for this purpose I have come to this hour.

When Jesus had thus spoken, He raised his eyes towards Heaven and said, "Father, the hour has come. Glorify Thy Son that the Son may glorify Thee;