In a year, the solar term in which the height of the equatorial noon sun reaches the maximum is

(1) The solar rays are perpendicular to the termination line. (2) According to the picture, the sun points directly to the Tropic of Capricorn, which is the winter solstice in the northern hemisphere. (3) The midday sun height at the direct point of the sun reaches the maximum value in a year. (4) On the equator, the noon sun height is 90-23 26 ′ = 66 34 ′, and the Arctic Circle is on the terminator line. Solstice of winter. (3)23° 26′s .(4)66° 34′； 0 ; 0 .