The azimuthal equidistant projection is an azimuthal map projection. The equator is the circle that is equidistant from the North Pole and South Pole. Mainland Finland's northernmost and southernmost points are roughly equidistant from Oulu. The flag of the United Nations contains an example of a polar azimuthal equidistant projection. The great circle equidistant to each is then the "equator". There are two firms also located equidistant around the circle. Midway is roughly equidistant between North America and Asia. Traffic is stationary if all the vehicle trajectories are parallel and equidistant. The standard Western chromatic scale has twelve equidistant semitones. Kansas is located equidistant from the Pacific and Atlantic oceans. Cardinal B-splines have knots that are equidistant from each other. Faversham is roughly equidistant between Sittingbourne and Canterbury. St. Louis is roughly equidistant from the two campuses. Lying roughly equidistant from them, there is usually a sculpted stela and altar pair. Classical conics can be realized as equidistant sets.