What is another word for Parhelic Circle?
Pronunciation: [pɑːhˈɛlɪk sˈɜːkə͡l] (IPA) 
The Parhelic Circle, also known as the circumzenithal arc or the "upside-down rainbow," is an atmospheric phenomenon that occurs when sunlight reflects off ice crystals in the air. There are several synonyms for the Parhelic Circle, including the Halo Arc, afterglow, or fire rainbow. Another term used to describe the Parhelic Circle is the circumhorizontal arc or CHA, which is a similar phenomenon that occurs when light passes through hexagonal ice crystals. Other related terms include the 22-degree halo, sun dog, and sun pillar, which are all caused by similar refraction of light within ice crystals. These rare and beautiful occurrences inspire awe and wonder in those who witness them, and serve as a reminder of the fascinating mysteries that surround us every day.
