In a well-formed 22° halo, which color appears on the edge closest to the moon?

Answer

Red

Due to the light spreading upon refraction, the red portion of the visible spectrum appears on the inside edge of the ring, closest to the moon, while cooler tones are refracted further out.

In a well-formed 22° halo, which color appears on the edge closest to the moon?

#Videos

What does a moon halo mean for snow chances? - YouTube

weatherMoonhaloringstorm