Evershed, M. A. (Orr) · London : Gall & Inglis · leaf 163
A D 150 ^ … Fig. 25. The Sun and the Equinox. and night equal, and from this we count the beginningand ending of our seasons. So our year is countedfrom equinox to equinox, and is twenty minutesshorter than the sidereal, or star year, of theancient Babylonians. Hipparchus, from observationsof equinoxes and…
Dante Alighieri, 1265-1321 · Astronomy
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