I was fortunate enough to see this sun halo today over the angel monument on Mont-Royal, Montreal, and even more fortunate to get a picture of it. It was like a rainbow had formed around the sun in a perfect circle. These halos are caused by ice crystals in the atmosphere refracting light.
As I was capturing this, a bus pulled up. So I stepped onto the wrong bus, realized this too late, and had to walk back to this stop and wait 30 minutes for my next one.
But it was worth it.
So worth it.