World Sundial Day was on 20 March 2026, the day of the equinox.
For the second year running, it provided the occasion for a
major online conference, attended by around a hundred
sundial enthusiasts from all over the world.
Around fifteen speakers took to the stage, and their presentations sparked fascinating questions and discussions.
It was a great opportunity for me to present the Papophoplon. And I’m delighted to say it was very well received, as you’ll see when you watch the video (here).
The talks are generally in English (including mine), but they can be translated or include subtitles.
Speaker(s) | Presentation title |
Monika Lübker | Opening |
Léon André | Projection sundials for temporal hours, local time, mean local time and Central European Time. |
Frank King and Annika Petersson | Ancient Scandinavian Time-Keeping via a New Sundial in a School Car Park. |
Roger Torrenti | The Gnomonist’s Survival Kit. |
Claude Gahon | La lumière plutôt que l’ombre. |
Frederick Sawyer | Proclamation for Sundial Day at Silver City NM. |
Elsa Stocco | Hall for Gnomonics. |
Giuseppe De Donà | How to Build an Inclined and Declining Sundial in a Large Square. |
Miholcsa Gyula | Sundials in Transilvania. |
Paul Ulbrich | Making East West Facing Sundials from typing paper. |
Christophe Marion | Reconciling earthlings with solar time! |
Douglas Gennetten | Precision Dialing Online – Unmatched ease-of-use and design flexibility. |
Davidson Norris | Helioscape: sundials that tell Plant Time. |
Paul Calderon | Relojes de sol como patrimonio astronómico en Chile. |
Evan Boxer-Cook | Pop Culture’s Sundial. |