An examination of the motion of the Sun through the sky. We discuss the use of the gnomon through history to make measurements and the Sun's path through the Zodiac on the ecliptic with special attention paid to the equinoxes and solstices. We conclude with an discussion of the yearly calendar in many cultures.
Gnomon Diagram
Ming Dynasty Gnomon with Shadow Length Measuring Scale
Sextant
The Celestial Sphere
The Path of the Sun on the Ecliptic through the Zodiacal Constellations
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