1.- Download and install the compiler for free from: 
                         www.basic256.org
                          or
                          https://sourceforge.net/projects/basic256prtbl/
                                                                   
2.- Download the codes HERE -"Crescent Moon Visibility"(software codes)- and save them on your computer

3.- Open the BASIC256 compiler and open the file “Crescent Moon Visibility”

4.- Follow the compiler instructions to run the software

5.- If you have any questions, please contact us

6.- Documentation: "Crescent Moon Visibility"