This is a solar halo I captured a couple of weeks ago. Above the circular 22° halo you can see a wave like halo that's called a upper tangent arc. Running through the center of the Sun is a thin line called a Parhelic circle. That circle is always on the same height as the Sun and can be visible in a complete 360° circle in the sky. Just outside the 22° halo you can see two Parhelic sundogs.
It's tiny ice crystals in the atmosphere that create halos by refracting and reflecting light.
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