❝ 22° halos form when the sky contains millions of poorly oriented ice crystals. Some of these happen to be aligned perpendicular to the sun light as viewed by one observer which produces the illuminated 22° circle, while other crystals produces the same phenomenon for other observers. ❞
via Wikipedia
photo via David Cartier
There was a very clear halo in the sky tonight. This comes after an interesting day with clouds on every horizon, but a clear sky.