Sunrise/Sunset S60 Free - A program to determine the beginning and end of twilight, sunrise and sunset, the time of zenith, the duration of the day. The program contains a base of 240 cities around the world. For each city displayed its coordinates (latitude, longitude) and time zone offset. Output of results possible for any date. You can manually adjust DST. The program allows you to add 5 additional user locations. The program has a nice interface and easy to use.