Sundial Links
Database of sundials in Germany and Switzerland (around 20,000 entries):
https://gnomonica.de/katalog.php
The first German sundial atlas, which can be accessed without registration. Here you will find the locations of the sundials contained in the sundial database gnomonica.de:
Recommended software for sundial calculations by Dr Helmut Sonderegger
http://www.helson.at
Calculation of a sundial – Shadows
https://www.shadowspro.com/de/index.html
"Sol Et Umbra" app for smartphones with lots of information about sundials (life representation of a vertical sundial and the sun's path, time calculations, etc.)
https://play.google.com/store/apps/details?id=gian.gnomonica.SolEtUmbra&hl=de
To quickly check the true local time in your smartphone's browser (without installation). Switch on GPS and allow location access.
Excellent sun path simulator for any latitude, date and time
http://astro.unl.edu/classaction/animations/coordsmotion/sunmotions.html
Simulation of the formation of the seasons
http://astro.unl.edu/classaction/animations/coordsmotion/eclipticsimulator.html
Information and calculation data relating to the sun, moon, time zones and much more
https://www.timeanddate.de/sonne/
Calculate, print and craft a wall sundial out of paper. Includes simple determination of wall deviation using Google Earth.
https://www.sundialzone.com/de/
German Society for Chronometry – Sundials Expert Group
http://www.dg-chrono.de/fachkreise/
Sundials in Birkenau
http://www.sonnenuhren-birkenau.de/
Astronomy
The site for amateur astronomers
www.astronomie.de
