1、the fifteenth day of the eighth lunar month2、August 151.Our Mid - autumn Festival is on August 15 th in Chinese lunar calendar. 我们的 中秋节 是中国的农历八月十五.2.The 15 th day of the eighth lunar month is the Mid - autumn Festival. 农历八月十五正值秋季正中,所以叫 中秋节 .3.The Mid - Autumn Festival falls on the 15 thdat of the 8 th lunar month. 每年农历八月十五是传统的中秋佳节.