On the solstice in summer, except that the sun is in the north at noon, is the direction of the sun the same between the tropic of cancer and the equator and the north of the tropic of cancer?

On the summer solstice, although the sun rises in the northeast and sets in the northwest. But the directions of sunrise and sunset are different.

Sunrise in the northeast that day. According to the formula of sunrise and sunset azimuth (very complicated), the precise azimuth of sunrise can be calculated, and the α = 26 on the day of the Tropic of Cancer (about 24 on the day of the equator) can be obtained. The sunrise azimuth from the south of the Tropic of Cancer to the equator is between 24 and 26, and from the north of the Tropic of Cancer to the Arctic Circle is between 26 and 90.

Solstice is the earliest of the 24 solar terms. In the 7th century BC, the shadow of the sun was measured by civil soil gauge, thus the summer solstice was determined. According to "Zunxian Manuscript", "The sun arrives in the north, the days are long and the shadows are short, so it is called the summer solstice. At best, it is excellent. "

From summer to sunrise, the sun directly reaches the northernmost point of the year, almost directly to the Tropic of Cancer (23 26' north latitude), which is the longest place in the northern hemisphere. The higher the latitude, the longer the day. For example, the daily length of Haikou in Hainan is a little more than 13 hours, Hangzhou is 14 hours, Beijing is about 15 hours, and Mohe in Heilongjiang can reach 17 hours.