Our Projects
Build an EarthDial
Specifications for an EarthDial
The measurements and necessary components for a standard EarthDial
How to Build an EarthDial
Step-by-step instructions (also available in PDF format or as a summary in Spanish)
How to Read a Sundial
What time is it?
EarthDial Glossary
Face, furniture, gnomon, gnomonicist, motto, style
EarthDial Calculator
Calculates the locations of the lines on the face of the EarthDial for your latitude
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They are Watching the Skies for You!
Our researchers, worldwide, do absolutely critical work.
Asteroid 2012DA14 was a close one.
It missed us. But there are more out there.
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