Nordic Cross flag design unique to Greenland - was adopted on June 1985, supported by fourteen votes against eleven who supported a proposed green-and-white Nordic cross. Historical Flag of the Kalmar Union, which united Denmark, Sweden and Norway 1397 to 1523. No pictorial evidence survives of the Kalmar Union's Flag. The flag appearing here is a reconstruction based on references in 1430 letters by King Eric of Pomerania. These flags either do not have official status or represent various private entities. They have not been officially adopted and their use remains limited. Nordic flag designs very similar to Denmark's, Sweden's, and Norway's national
Flag of Switzerland squares until 1889, when its dimensions were officially set. The civil and state ensign of Switzerland, used by Swiss ships, boats and non-governmental bodies, is rectangular in shape and has the more common proportions of 3:2. The Swiss flag is one of only two square sovereign-state flags, the other being the flag of Vatican City. The emblem of the Red Cross is the Swiss flag with switched colours. According to the 2017 flag law (SR 232.21), "The Swiss flag shows a Swiss cross on a square background". Special provisions are made for the naval ensign and for civil aircraft identification.