Is the duration of each of the 24 solar terms the same?

The current "twenty-four solar terms" are divided by "constant gas method", that is, each solar term corresponds to a certain position that the earth reaches every time it runs 15 on the ecliptic; The "constant gas method" divides the sun's annual trajectory into 24 equal parts, each 15 is an equal part, and each equal part is a solar term. That is to say, each solar term refers to the sun's revolution relative to the earth 15 (with reference to the earth), and the sun's moving speed is almost the same every year, so the time interval between each solar term is almost the same.