About

My name is Gonçalo Trincão Cunha, I’m a Lisbon-based software engineer driven by a deep curiosity for science-related topics.

Not too long ago, while enjoying a day at the beach with my children, they expressed a keen interest in building a sundial using a simple stick in the sand. Regrettably, the results fell short of expectations, revealing a time discrepancy of over an hour when compared to a standard wristwatch.

Intrigued by this notable difference, I started to investigate the cause. The outcome of that research is this website, where I try to make it easier for others to build accurate sundials.

If you find value in this site or have suggestions on enhancing it, kindly reach out via email at sundialingspace@gmail.com.

Your feedback is highly appreciated.

Sundial Resources (External)

Some links to sundial resources that I found useful:

• The Sundial Primer - by Carl Sabanski
• Sundials on the Internet - Introduction - by Internetworks Ltd
• Equation of Time - by Kevin Karney
• The mathematics of sundials - by Jill Vincent
• The Shadow Knows: How to measure time with a sundial - by David Austin / American Mathematical Society

Site Resources

Resources used to build this site:

• Site generator: Jekyll
• Site theme: Minimal Mistakes
• Logo by: Lydia Gulinkina on Unsplash