Are the 24 solar terms arranged in any way every year? Lunar calendar? Are the days between two solar terms the same every year?

Some people think that the 24 solar terms are subordinate to the lunar calendar, but they are actually defined according to the solar calendar (Gregorian calendar).

That is, according to the position of the sun on the ecliptic, a year is divided into 24 equal parts. That is to say, the ecliptic is divided into 24 equal parts, and each equal part accounts for 15℃ of the ecliptic. Because the time required for the sun to pass through each bisection is almost equal, the Gregorian calendar dates of the 24 solar terms are roughly the same every year:

The first half of the year is around the 6th and 2 1, and the second half is around the 8th and 23rd.

And there are two formulas: 621 in the first half of the year and 823 in the second half.