a diamond shaped caft with a halo and long tail it was ice blue.It was a diamond shaped craft with a half moon halo traveling along in front of it. It had a long tail that was a little bit wider than the craft itself. I saw the U.F.O outside of my window the window is facing south the craft was going east I ran to the window and watched it for a very short period of time approximately 30 seconds before it disappeared . I didn’t take an approximate time but it was around midnight. If it helps I am a trained national weather service weather spotter and have never seen anything like this before.