The Mid-Autumn Festival is celebrated in several Southeast and Northeast Asian countries, especially among those of Chinese descent. The festival is observed on the 15th day of the eighth lunar month, which is the middle of the autumn season, and it falls sometime around mid- to late September, or early October in the Gregorian calendar. The countries that celebrate the Mid-Autumn Festival include:

• China: The Mid-Autumn Festival is one of the most important holidays in Chinese culture, and it is celebrated with mooncakes, lanterns, and family reunions.

• Taiwan: The Mid-Autumn Festival is celebrated with a radiant display of lanterns and cultural performances, showcasing the islands rich cultural heritage.

• Korea: The Mid-Autumn Festival is known as Chuseok, and it is a three-day holiday that celebrates the harvest season and honors ancestors.

• Japan: The Mid-Autumn Festival is known as Tsukimi, and it is a time to appreciate the beauty of the full moon and the autumn harvest.

• Vietnam: The Mid-Autumn Festival is called Tet Trung Thu, or Childrens Festival, and it is celebrated with lion dances, lanterns, and mooncakes.

• Singapore: The Mid-Autumn Festival is celebrated with extravagant lantern displays held across the city-state in venues such as Gardens by the Bay, and the Chinatown celebrations are also on a grander scale.

• Thailand: The Mid-Autumn Festival is better known as Moon Praying Festival or Moon Cake Festival, and it is celebrated with mooncake exchanges among friends, relatives, and neighbors.

• Malaysia: The Mid-Autumn Festival is celebrated with lantern processions, lion dances, and mooncake exchanges.

• Indonesia: The Mid-Autumn Festival is celebrated with mooncake exchanges and lantern processions.

• Philippines: The Mid-Autumn Festival is known as the "Mooncake Festival" or the "Mooncake Lantern Festival," and it is celebrated primarily by the Filipino-Chinese community.

Overall, the Mid-Autumn Festival is widely celebrated across Asia, and it is a time to appreciate the beauty of the full moon, the autumn harvest, and the importance of family and community.