Which of the 24 solar terms has the longest day?

The summer solstice is the longest day in a year, and it is also the day with the highest sun at noon. On the day of summer solstice, the sun moves to 90 degrees of the yellow meridian (summer solstice, currently in Gemini), and the position where the sun directly hits the ground reaches the northernmost point of the year, almost directly to the Tropic of Cancer. At this time, the daylight hours in all parts of the northern hemisphere reach the longest in the whole year. Tropic of Cancer and its northern area. Similarly, the winter solstice is the shortest day in a year.