However, when it saw how Thyestes, a mythological figure, was served his own son for dinner by his brother Atreus, the sun was so horrified that it left its course and moved to the zodiac instead.
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Shortly after Oenopides, in 432 BC, Meton and Euctemon discovered the better value of 18 years, equal to 223 months (the so-called Saros period).
Philosophers and astronomers treated by Eudemus include Thales, Anaximander, Anaximenes, Oenopides, Eudoxus, and others.