When I first started college I studied Astronomy at the University of Texas at Austin. I ended up changing my major to radio and television at Arkansas State University but I still enjoy reading Sky and Telescope and Astronomy magazines. I still have a lot of astronomy books in my library and several of them have computer programs in them. Most of those programs were written in BASIC and I used them back in the 70s and 80s when I worked with AtariBASIC and GWBASIC. I recently decided to create Flutter Web applications out of those programs and updated them to more recent algorithms. I also tried to maintain the original functionality while improving the user interface. The listings below are what I have completed so far. I hope you are able to make use of them and enjoy using them as much as I enjoyed working with them.