What does the yellow calendar ugliness represent?

The second month is November of the lunar calendar; The ugly month is December of the lunar calendar; Silver moon is the first month of the lunar calendar (1 month); Uzuki is February of the lunar calendar; Chen Yue is the third month of the lunar calendar; Mitsuki is April in the lunar calendar; The afternoon month is the fifth month of the lunar calendar; The last month is June of the lunar calendar; Shen Yue is July of the lunar calendar; The full moon is the August of the lunar calendar; The moon is September in the lunar calendar; Haiyue is October in the lunar calendar.

Good luck.