Mid-Autumn Festival (Sept. 19)

The Mid-Autumn Festival (traditional Chinese: 中秋節; simplified Chinese: 中秋节; pinyin: zhōngqiū jié; Vietnamese: Tết Trung Thu) is a popular harvest festival celebrated by Chinese and Vietnamese people.  The festival is held on the 15th day of the eighth month in the Chinese calendar, during a full moon, which is in September or early October in the Gregorian calendar, close to the autumnal equinox.

Read more from Wikipedia.