The White Moon Ring

When ever I'm outside at night, I usually stare up at the sky. If the moon is out, I usually see a little ring of light around the moon, and it's usually some sort of red. Tonight I looked up and the ring was wide and white. It was the first time I ever seen a large white ring surrounding the moon. I had to stare at it for a couple of minutes because I never seen anything like it before. I wish I had a good camera to take a picture. It might because of the cooler air around this time of year or the angle it was shining down on earth. I'm not too sure, but I hope I see it again.