Excuse me: What is the time between two solar terms? For example, does the time between Qingming and Grain Rain belong to Qingming? thank you

Personally, I think time does not belong to any solar terms. As far as I know, the 24 solar terms in a year are based on the lunar calendar in China, which was determined by the ancients according to the changes of the moon in the sky, such as rain or shine. I think 24 solar terms is 24 special cosmic celestial positions or meteorological phenomena, which are 24 independent phenomena, that is to say, special phenomena only appear at special moments. So I don't think time should belong to.