Relationship between Earth's Rotation Speed and Date

When the earth turns to perihelion, its revolution speed is the fastest. It is the winter solstice, and the distance between the sun and the earth is the closest.

When the earth turns to perihelion, the revolution speed is the slowest. At this time, it is the summer solstice, and the sun is the farthest from the earth.

This is because the earth rotates along the earth axis, and the equator is perpendicular to the earth axis, and there is an included angle with the revolution plane of the earth, which is called the ecliptic angle. The earth axis is on the right, the apohelion is on the left, and the perihelion is on the right.

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