'Midnight' in the Bible

watch ye, therefore, for ye have not known when the lord of the house doth come, at even, or at midnight, or at cock-crowing, or at the morning;

And he said unto them, 'Who of you shall have a friend, and shall go on unto him at midnight, and may say to him, Friend, lend me three loaves,

And at midnight Paul and Silas praying, were singing hymns to God, and the prisoners were hearing them,

And on the first of the week, the disciples having been gathered together to break bread, Paul was discoursing to them, about to depart on the morrow, he was also continuing the discourse till midnight,