Is the cloudy year a dry day or an earthly branch?

What is a cloudy year, a cloudy month, a cloudy day and a cloudy day?

This is what Yin and Yang call it, and it is called "eight-character full yin"

China used "heavenly stems" and "earthly branches" in traditional precepts. There are ten "heavenly stems", which are divided into five yin and five yang. A, C, E, G, nonyl Yang; B, D, D, Xinhe. There is a branch of 12, which is divided into 6 yin and 6 yang. Zi, Yin, Chen, Wu, Shen, Xu Yang; Ugly, ugly, awkward, unfinished, unitary, yin. "heavenly stem" is referred to as "stem" and "earthly branch" is referred to as "branch". Auspicious season is "dry" with "branches", and yin and yang are always in harmony. Year, month, day and hour are called "four pillars", and each pillar consists of a stem and a branch. The branches of the four "pillars" add up to eight words, which are called "eight characters". If the four "pillars" are all composed of "stems" and "branches" belonging to yin, it is called "all yin in eight characters"! Of course, there are also eight-character all-yang ones.