The current sun position is displayed, and the parts of the earth in sunlight and twilight are highlighted, with local sunrise/set and times around the world. World, US, view-from-space, and North Pole maps are included. 7.1 adds much improved responsiveness, network features, and support for the QRZ CD for HAMs. A DOS version (GEOCLK71.ZIP) is also available, and the two versions are functionally and visually similar. Over 200 maps and a spinning globe program are available.