Calculation of distance and course beetwen two points on Earth (through coordinates or grid locator), and Sunrise, Sunset and Midday time for these locations (in UTC). Also sexagesimal degrees and decimal degrees convertion and grid location. For use mainly for Radio Amateurs.
Creates an Imager image containing an equirectangular projection of the world map, with optional Maidenhead locator grid and day/night illumination showing the area of enhanced propagation known as the 'grey line'. Also utility methods for adding dots at locator positions or lat/long coords, and filling grid squares with colour to provide a 'heat map' of activity from these squares.