The Moon Festival, also known as the Mid-Autumn Festival, is a traditional celebration in many East Asian cultures, particularly in China, Vietnam, and Taiwan. It occurs on the 15th day of the 8th month of the lunar calendar, when the moon is at its fullest and brightest. Families gather to admire the moon, enjoy festive foods, and share stories. One of the most popular treats during the Moon Festival is the mooncake, a round pastry filled with various sweet or savory fillings. The festival also symbolizes reunion and gratitude, as people express their appreciation for the harvest and the beauty of the moon.