We can't say for sure when angels were created, but can we even say if angels were created at all? So over the summer I was on a mission trip and was thinking of angels protecting us while we were in some sketch situations, then later I began to ask myself where in the Bible does it say angels were created? The only evidence I have found is in Colossians 1:16&amp;17..but then in John 1:3 it says "all things were made by him, and without him there was nothing made that was made". The end of the verse seems to imply that there are things that were not made. Am I misinterpreting that?
Thou, even thou, art Lord alone; thou hast made heaven, the heaven of
  heavens, with all their host, the earth, and all things that are
  therein, the seas, and all that is therein, and thou preservest them
  all; and the host of heaven worshippeth thee.
  
  Nehemiah 9:6


Also


  Praise ye the Lord. Praise ye the Lord from the heavens: praise him in
  the heights.
  
  Praise ye him, all his angels: praise ye him, all his hosts.
  
  Praise ye him, sun and moon: praise him, all ye stars of light.
  
  Praise him, ye heavens of heavens, and ye waters that be above the
  heavens.
  
  Let them praise the name of the Lord: for he commanded, and they were created.
  
  Psalm 148:1-5


And lastly, but probably the best answer:


  For by Him all things were created, both in the heavens and on earth,
  visible and invisible, whether thrones or dominions or rulers or
  authorities—all things have been created by Him and for Him. And He is
  before all things, and in Him all things hold together.
  
  Colossians 1:16-17


Also about John 1:3 it is explaining that Jesus has always been there and that He is the Creator. All things were made by Him, and if He hadn't been there nothing would've been created.