Dear Gianni, I want to thank you again for the copy of Sund98P you sent me. Viewing the "Hours before sunset" azimuth and altitudes for the entire year made it much easier for me to visualize the angles and leanings of the knife when making the "one knife-cut sundial". Well, and a number of other visualizations it would have been hard to make without it.
Best Wishes, Edley McKnight [43.126N 123.357W]
