25th. According to the information of the query calendar network, taking 2023 as an example, Valentine's Day on August 25th, 2023 is a traditional festival in China, which falls on the seventh day of the seventh lunar month every year. Qixi, also known as China Valentine's Day, Qiqiao Festival and Daughter's Day, is one of the traditional festivals in China. The legend of Qixi originated in Han Dynasty and prevailed in Tang and Song Dynasties.