Can be used to quickly look up the sunrise and sunset times of any town within the United States. Sunrise/Sunset Calculator was especially designed for professional truck drivers and companies that haul oversized and wide loads. Oversized loads are usually only permitted to be hauled during daylight hours. You simply click a given State's button, select a town's name, and press the "Calc&quot\; button to display the sunrise and sunset times. A special user button can be programmed with other locations in addition to those already listed for the individual States. The program also enables you to enter the North, South, East, and West coordinates of a location to find out the sunrise and sunset times, as well as switch to military time format and view the current phase of the moon. Sunrise and sunset times are correct within plus or minus three minutes.