Question

Why does the circle of illumination not coincide with the axis of the Earth?​

Answer 1

Answer:

If the earth was not inclined at an angle of 23.5 degrees from the vertical then the Circle of illumination and and the axis of earth would have coincided. Thus the Inclination of the earth's axis with respect to the vertical line is the reason for circle of illumination not coinciding with the axis of earth.

Answer 2

Answer:

If the earth was not inclined at an angle of 23.5 degrees from the vertical then the Circle of illumination and and the axis of earth would have coincided. Thus the Inclination of the earth's axis with respect to the vertical line is the reason for circle of illumination not coinciding with the axis of earth.