Glory effect with plane above Czechia (Czech Republic).
Glory / “halo” – an optical phenomenon, in a form of circle of white / colored light (like a circle of light around the head of a saint), surrounding the shadow of the head of observer (or of a plane airbone). It is caused by refraction of the sunlight or moonlight through ice crystals (water droplets in mist or clouds) in the atmosphere. Glory can also be formed around the sun, moon and or other luminous body.
September 30, 2016
See also:
Glory | Glory in the clouds | Glory and the Moon
40thousandkm 
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Here, when they form around the moon in winter, they are called moon rings and less often moon glows.
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