Person
Oenopides
Oenopides of Chios was a Greek astronomer and mathematician of the fifth century BCE. He is credited with discovering the obliquity of the ecliptic, the tilt of the sun's annual path against the celestial equator, and with proposing a 'Great Year' of 59 years to reconcile solar and lunar calendars. Later writers also attributed basic geometric constructions to him.
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- APA
- The Epoch Institute. (2026). Oenopides. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/oenopides
- MLA
- “Oenopides.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/oenopides. Accessed .
- Chicago
- The Epoch Institute. “Oenopides.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/oenopides.
- Harvard
- The Epoch Institute (2026) ‘Oenopides’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/oenopides (Accessed: ).
Last reviewed October 2026Random entry ↻