'Mid heaven' in the Bible

And I saw and I heard one angel flying in mid-heaven, saying with a loud voice, Woe! Woe! Woe to the inhabitants of the earth, from the rest of the voices of the trumpet of the three angels being about to sound!

And I saw another angel flying in mid-heaven, having the everlasting gospel to preach to those dwelling on the earth, even to every nation and kindred and tongue and people,

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