What do you mean when are the 24 solar terms? For example, beginning of spring 12: 30.

Twenty-four solar terms are the names that reflect the characteristics of farming season according to natural phenomena, and they are the knowledge accumulation of thousands of years' farming experience of China people. Starting from the vernal equinox of 0 degrees, reflecting the position of the sun on the yellow head, every 15 degrees is a solar term (see "Twenty-four solar terms" in Baidu Encyclopedia).

The period of the earth's revolution around the sun (a tropical year) is 365 days, 5 hours, 48 minutes and 46 seconds (365.2 19 days), and the average interval of each solar term is about 15 days, 5 hours 14 minutes, 310.88 seconds (/kloc-0