If you happened to see this halo like figure surrounding the sun on the sky yesterday at around 12 noon, this is called a Parhelic Circle. My friend took this shot yesterday at Valeria St., Iloilo City. But what are Parhelic Circles?

The Parhelic circle is a white band circling the sky and always at the same height above the horizon as the sun. Most of the time only fragments are seen, usually extending from sundogs in the directions away from the sun. When you see these long tails it is worth checking carefully all around the sky because the colourless Parhelic Circle can at first be difficult to distinguish from cloud.

Millions of ice crystals with their vertical faces each mirroring the sun around the sky form the circle.

Source: http://www.atoptics.co.uk/halo/parcirc.htm