This is the aftermath of what appears to be freezing rain in Vladivostok Russia yesterday. raindrops become supercooled whilst going through a sub-freezing layer of air hundreds of meters above the ground, freezing upon impact with any surface.
A 22° halo is an optical phenomenon that belongs to the family of ice crystal halos in the form of a ring with a radius of approximately 22° around the Sun or Moon. This one was spotted over Courchevel, Rhone-Alpes, France on February 8, 2018.