What are near-earth day and far-earth day?

The orbit of the earth around the sun is not an origin, but an ellipse.

Therefore, the distance between the earth and the sun is constantly changing.

In a year, the closest day of the sun to the earth is the near-earth day, which is the winter solstice in our 24 solar terms.

On the contrary,

The farthest day from the sun to the earth is apogee day, which is the summer solstice in the 24 solar terms.