How many solar terms are there in a year?

There are always 24 festivals in a year. They are: beginning of spring, Rain, Surprise, Spring Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Slight Summer, Great Summer, beginning of autumn, Chu Summer, Bailu, Autumn Equinox, Cold Dew, First Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold. Among the solar terms, beginning of spring, Jing Zhe, Qingming, Long Summer, Mang Zi, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Daxue and Xiaohan are silver moon, Uzuki, Chen Yue, Mitsuki, Wuyue, Yue Wei, Shenyue, Youyue, Manyue, Haiyue, Ziyue and Ugly Moon.