Chuseok is the Korean harvest festival that follows the same lunisolar date system as China’s Mid-Autumn Festival.
Both festivals occur on the fifteenth day of the eighth month in their traditional lunisolar calendars. Because that calendar does not align with the Gregorian calendar in a fixed way, the festivals usually fall in September or October in modern calendars.
The shared timing reflects broader East Asian calendrical traditions, but the celebrations are culturally distinct. Chuseok emphasizes Korean family gatherings, ancestral rites, grave visits, harvest foods, and regional customs. China’s Mid-Autumn Festival has its own history, foods, legends, and social practices.
This comparison does not mean the festivals are interchangeable. The common date pattern is a calendrical connection, while the rituals and meanings developed within different societies.