Rainbow curved and located high above the Sun (or Moon) with its convex side pointing downwards (creating the impression of an "upside down rainbow"); the circumhorizontal arc runs much closer to the horizon, is more straight and located at a significant distance below the Sun (or Moon). Both arcs have their red side pointing towards the sun and their violet part away from it, meaning the circumzenithal arc is red on the bottom, while the circumhorizontal arc is red on top. The circumhorizontal arc is sometimes referred to by the misnomer "fire rainbow". In order to view it, the Sun or
Rainbow (group) was released. On August 12, 2010, Rainbow released the single "A". A second single, "Mach", was released on October 20. In April 2011, Rainbow released their second EP, "So Girls". One song from the EP, "To Me", was released as a single. On September 7, 2011, Rainbow topped Recochoku's weekly download rankings for the Japanese release of their "A" music video. On September 14, 2011, Rainbow released their debut single in the Japanese market, "A", and reached No. 3 on Oricon's daily single chart, selling 10,141 copies. The single release included a Japanese remake of their debut single "Gossip Girl",