September 19, 2021
The Mid-Autumn Festival is also called the Moon Festival or the Mooncake Festival. It traditionally falls on the 15th day of the eighth month of the Chinese lunar calendar, which is in September or early October on the Gregorian calendar.
In 2021, the Mid-Autumn Festival falls on September 21st (Tuesday). Chinese people have a 3-day public holiday from September 19th to 21st.
A “mid-autumn festival” is also celebrated in many other Asian communities besides China. In China, it's a reunion time for families, just like Thanksgiving, while in Vietnam, it's more like a children's day.
The Mid-Autumn Festival is the second most important festival in China after Chinese New Year. Chinese people celebrate it by gathering for dinners, worshiping the moon, lighting paper lanterns, eating mooncakes, etc.