After the summer solstice, the sun sets later than before. Why is this happening?

From summer to the future, the sun sets later than before because it is the effect of long days and short nights caused by the inclination of the earth's rotation axis, and the closer it is to the second level, the more obvious it is.

The summer solstice is the tenth of the twenty-four solar terms. The "Twenty-four solar terms" were originally determined by the bucket handle direction of Beidou. Bucket handle starts from the north of due east and turns south, west and north, which is one of the "years old".

The battle refers to noon, which is the summer solstice. The current "twenty-four solar terms" are divided by the method of "constant gas", that is, each solar term corresponds to a certain position reached by the earth every time it runs 15 on the ecliptic, and the summer solstice is when the sun runs to 90 degrees on the ecliptic.

Seen from the ecliptic plane, the sun is on the background of Taurus, Gemini and Cancer. The summer solstice is the northernmost day of the sun in a year, the culmination of the sun's northward movement, the longest sunshine day in the northern hemisphere, and the day that exceeds the night time the most.

On the day of the summer solstice, except the south pole of the Antarctic circle and the polar night area, the sunrise direction in all parts of the earth starts from the northeast and sets in the northwest.

Summer solstice was also called "Summer Festival" and "Summer solstice Festival" in ancient times. It is not only one of the 24 solar terms, but also a festival in the ancient folk "four seasons and eight festivals". Since ancient times, there has been a custom of worshipping gods and ancestors on the solstice in summer to pray for disaster relief and bumper harvest.

When the sun moves to the longitude of the Yellow River at 90 degrees, it is the intersection of the summer solstice, usually on June 2 1~22 of the Gregorian calendar. On the day of summer solstice, the position where the sun shines directly on the ground reaches the northernmost part of the year, almost directly on the tropic of cancer. At this time, the daylight hours in all parts of the northern hemisphere reach the longest in the whole year.

For the Tropic of Cancer and its northern area, the summer solstice is also the highest day of the year at noon. On this day, the northern hemisphere received the most solar radiation, almost twice as much as the southern hemisphere.