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Revolution motion effects<br />
• Seasons existence (inclined rotational axis)<br />
• Different height of the Sun above the horizon along the year<br />
• Different rising and sunset points on the horizon along the year (at<br />
East-West at Equinoxes; toward North in summer and South in winter<br />
for a boreal observer)<br />
• Apparent rotation of the sky<br />
• Apparent annual motion of the Sun (Zodiac band rotation)