2. The Mid-Autumn Festival is an important traditional festival in the cultural circle of Chinese characters, which falls on August 15th of the lunar calendar every year, from September to1early October of the Gregorian calendar. According to the lunar calendar, August is the second month of autumn, which was called Mid-Autumn in ancient China. Therefore, it is called Mid-Autumn Festival among the people, and it is also called Autumn Evening, August Festival, August Half-Day, Moon Festival and 15th Night, which is one of the four traditional festivals of the Han nationality.