From the developer: "Suncycle is a calendar with the sunrise and sunset time for a latitude/longitude and time zone. The moon ephemeris is also available now .Suncycle has been downloaded in 47 countries over the globe. You can configure in the about screen the winter and summer time offset (The daylight saving for the northern and southern hemisphere is available). On the sunrise/set a media file can be activated (image and sound). Suncycle may be set in the systray (the application shall disappear from de desktop and the status bar, but the application suncycle will still been running and gives in the systray hint the ephemeris). The help file explains the majors options of Suncycle."