'Day' in the Bible

"You are righteous, O Lord, but we are humiliated this day -- the people of Judah and the inhabitants of Jerusalem and all Israel, both near and far away in all the countries in which you have scattered them, because they have behaved unfaithfully toward you.

"Now, O Lord our God, who brought your people out of the land of Egypt with great power and made a name for yourself that is remembered to this day -- we have sinned and behaved wickedly.

On the twenty-fourth day of the first month I was beside the great river, the Tigris.

Then he said to me, "Don't be afraid, Daniel, for from the very first day you applied your mind to understand and to humble yourself before your God, your words were heard. I have come in response to your words.