The circumzenith arc is always between the sun and the zenith point, and is the second colorful thing after rainbow. It is created by light refracting in ice plates.

2004/6/10 18:21 EDT. Circumzenith Arc with a bird. The white dot below the bird is the reflection of an interior light on the window, not the Sun. The Sun is to the lower left outside the photo. Nikon coolpix 995 digital camera from Boston Logan airport, MA.

Circumzenith Arc 2004/6/10

2003/11/7 15:20 EST. Circumzenith arc with a Nikon coolpix 995 digital camera from Pittsburgh, PA.

Circumzenith Arc 2003/11/7

2003/7/5 18:35 EDT A colorful circumzenith arc from Pittsburgh, PA. The photo is looking upwards above the tree top, and the Sun is low behind the tree. Nikon coolpix 995 digital camera.

Circumzenith Arc 2003/7/5

2003/5/19 18:57 EDT. Circumzenith arc from Carnegie Mellon university. Nikon coolpix 995 snapshot. Earlier in the afternoon I saw a parhelic circle which completely encircled the sky. What's more, there was a bright white spot 120 degrees to the right of the sun. This white spot is known as a paranthelion (pl. paranthelia), a rare sight. Too bad I was jogging and far far away from my camera... There were also sundogs and an upper tangent arc.

Circumzenith Arc 03/5/19

2002/10/8 17:57 EDT. Circumzenith arc from Carnegie Mellon university. At the time there was a bright sundog to the right of the setting sun too. Nikon Coolpix 995, 4/1000 second, F6.7, ISO 100.

Circumzenith Arc 02/10/8

2002/3/16 A faint circumzenith arc. Zenith was at top, the sun at lower right (outside of picture). 2002/3/16 17:25 EST. Photo taken with Nikon Coolpix 995 digital camera, shutter 1/222, F5.2, exp -0.7, f13.6mm. From Squirrel Hill, Pittsburgh.

Circumzenith Arc 02/3/16