HP-67/97 TIDES CALCULATIONS

[plore90]

Hello everyone,
here I am again to present my library of programs that I developed for HP-67/97, ​​regarding "TIDES CALCULATIONS", a series of magnetic cards that have as their object the prediction and calculation of the tides, both for fishing and for navigation. There are also three .zip files (OneDrive Link
https://1drv.ms/f/c/5e1e59b5c21225c8/En6...A?e=fYeBRK)
Sailing with the Tides PDF1.zip, Sailing with the Tides PDF2.zip, Sailing with the Tides PDF3.zip that contains the theoretical part and the exercises from which I was inspired to create the programs of the library. For each magnetic card there is the .hp97 file that as usual can be used with the two freeware emulators HP-67 and HP-97 by Mr. Michael O'Shea (LimpidFox.com) and the corresponding .PDF listing. In addition there are some magnetic cards that contain the preloaded data for the calculation examples. In the attached Manual "HP6797 TIDES CALCULATIONS MANUAL.txt" there are the instructions for using the various programs. As always, I will be grateful to those who will test the various programs and report any errors. Everyone will be able to modify and expand the programs as needed.
This is the Italian site where I got the formulas for my tide calculation programs:

http://navigazione.altervista.org/maree-2/

I hope they can be useful to some of you.
Thanks for your attention
plore90