This program was written with the amatuer astronomer in mind. C.L.A.P. will display the location of the Sun, Moon, and Planets with enough accuracy so you can plan your night of observing. Just run C.L.A.P. and see what objects are visible for your location on the night you want to observe. Then get out your Telescope or binoculars, and gaze at the heavens! The equations used for C.L.A.P. are accurate to within a few degrees for most objects.