|Date||5 August 2011|
|Location||Viewed from Bethesda, Wales||SH 63219 66497; 53.17793°N, 4.04809°W|
A sun dog (or parhelion) is a luminous spot on one or both sides of the sun at the same height as the sun. It is formed by refraction through hexagonal plate crystals of ice in high cirrus clouds.
Featured in NASA Earth Science Division’s Earth Science Picture of the Day, 12 October 2011.