Dear all, I'm glad to inform you that Orologi Solari n. 9 can now be downloaded from *www.orologisolari.eu* <http://www.orologisolari.eu/>.
This is the list of articles: 1. How to determine the operating hours of indifferently oriented flat sundial by the stereographic projection - Riccardo Anselmi 2. An outline of the equation of time on the sky of Florence - Stefano Barbolini 3. "Projective" sundials laboratory (part 2) - Francesc Clarà 4. The Julian Easter (part 2) - Giuseppe De Donà 5. How to recover an ancient sundial by means of an ellipse - Alessandro Gunella 6. The Waldshut Apolyearth (part 2) - Ives Opizzo 7. Platonic and Archimedes solids for gnomonics together with a polyhedric scaphen (part 1) - Fabio Savian 8. A multiface sundial - Joan Serra Busquets 9. Federico Commandino method revised without the ellipse construction - Carmelo Urfalino and Angelo Urfalino As usual a bonus containing related files and programs is also available. Greetings. Gian Casalegno
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