What is the date of the summer solstice?

1, the summer solstice is usually June 2 1 -22 of the Gregorian calendar every year. The summer solstice is the tenth of the 24 solar terms, which is determined according to the position of the sun on the ecliptic. The solstice in summer is when the sun moves to 90 degrees of the yellow meridian.

2. Although the sunshine duration is the longest in summer solstice, it is not the hottest time in a year, because the heat radiated from the sun to the ground is still more than that radiated from the ground to the air, so the temperature will continue to rise after the summer solstice.