Which earth has the smallest revolution speed, the vernal equinox, the autumnal equinox, the winter solstice and the summer solstice?

During the summer solstice, the earth rotates around the apohelion, and the revolution speed is the slowest.

When the earth is at perihelion, the revolution speed is fast, and both angular velocity and linear velocity exceed their average values. The angular velocity is11'11"/day, and the linear velocity is 30.3km/s; When the earth is at perihelion, the revolution speed is slow, and the angular velocity and linear velocity are lower than their average. The angular velocity is 57 ′11″/day, and the linear velocity is 29.3km/sec ... The earth passes through perihelion in early October and apohelion in early July every year. Therefore, from the beginning of 65438+ 10 to the beginning of July of that year, the distance between the earth and the sun gradually increased, and the revolution speed of the earth gradually slowed down. From the beginning of July to the beginning of 65438+ 10 of the following year, the distance between the earth and the sun gradually narrowed and the revolution speed of the earth gradually accelerated.