Sundials - World's Oldest Clocks

North American Sundial Society

Analemma Over El Ceritto

Ancient pyramid and a setting sun, patiently photographed over a year reveals the analemma

Earth at Night

An amazing view of the earth from the space station

Equation of TIme - Clocks vs Sundials

What is the Equation of Time?

Greenwich Globe

Can Time Zones be Turned to Art?

Intro to Solar Orientation

Fundamental motions of the earth and sun

Our Planet is a Clock

Earth's motion revealeld.

How the Sun Moves Across the Sky

Great explanation of how the sun moves. With Subtitles

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