'Mid heaven' in the Bible

And I saw, and heard an eagle, as he flew in mid-heaven, saying, with a loud voice, Woe, woe, woe to the inhabitants of the earth, because of the remaining voices of the trumpets of the three angels which are yet to sound.

And I saw another angel flying in mid-heaven, having the eternal gospel to preach to those who dwell on the earth, even to every nation and tribe and tongue and people;

And I saw an angel standing in the sun; and he cried with a loud voice, saying to all the birds that fly in mid-heaven. Come, gather yourselves to the great supper of God,