1 According to the query calendar, this year is 2023, and the Mid-Autumn Festival is September 29th in August 2023 15. This day is Friday, and this year's Mid-Autumn Festival is connected with the National Day, so the holidays are also together. The origin of the Mid-Autumn Festival is closely related to agriculture. Because August in the lunar calendar is January in the middle of autumn, and August 15th in the lunar calendar is the middle day of this month, the Mid-Autumn Festival is a festival to celebrate the harvest.