SunCalculator can help you to calculate the sunrise and sunset times. It calculates sunrise, sunset and twilight times and places it as graphically. The calculations are based on the sunriset function, which was released by Paul Schlyter, 1992 under the Public Domain.

Windows XP:
Just extract the zip file and launch SunCalculator.exe. Place the SunCalculator folder where you want, but don change the internal structure of the folder, or the application will stop working.

The license of this software is Free, you can free download and free use this calculator software.