Orologi solari


Orologi solari



  • Girolamo Fantoni, “Trattato completo di Gnomonica”, Technimedia 1988

This is the bible for Italian dialists

  • René Rohr, “Meridiane”, Ulisse Edizioni 1988

An English version is available too :

René Rohr, “SUNDIALS History, Theory and Practice”, Dover Publications 1996

  • Enrico del Favero, “Meridiane – Tecniche di Lettura Progettazione e Costruzione”, De Vecchi Editore 1999

  • Linda Perina e Renzo Zanoni, “Meridiane – Le Tecniche”, Demetra s.r.l. 1996

  • Linda Perina e Renzo Zanoni, “Meridiane Antiche e Moderne”, Demetra s.r.l. 1996

A collection of nice pictures.

  • Jean Meeus, Astronomical Algorithms, Willmann-Bell Inc. 1998

All the theory and the formulae for the computation of sun position, equation of time etc.


Software programs

My freeware program for sundial desgn, simulation and reverse engineering.

This is the Dialist’s Companion from NASS (North American Sundial Society) for sun parameters computation.

Site of the French program Shadows

Site of the widely used freeware program ZW2000.   

On line Czech program SHC.


Sundial organizations


Personal web sites

  • ANCR Sundials : horizontal sundials exactly designed for your garden and customized with your desired motto



East declining (110° E ) sundial


Go to the page


Download the PDF booklet (in Italian)

updated on sabato 12 maggio 2018