A 20° Glory sporting several rings, indicating constant droplet size distribution on the cloudcover below. This particular Glory was centered on seat 9C, behind the left wing of the Avrojet 100 aircraft I was flying in – passengers seated more to the front saw the Glory centered on their position (the aircraft shadow would be more to the left).

Interesting to notice that as the plane descends for landing its shadows gets bigger but the glory diameter remains the same.

More info and the related math of this phenomenon: