Is the moon of the Lantern Festival a full moon?

The moon of Lantern Festival is full moon.

The moon on the fifteenth day of the first month is round, but it is not necessarily the roundest. There is often a saying among the people that "the moon on the fifteenth day is sixteen circles" is actually an astronomical phenomenon. Under normal circumstances, the new moon should be in the early morning of the first day of the first lunar month, and the fifteenth night of the lunar calendar happens to be a full moon.

According to the Taoist "Sanyuan Festival", the fifteenth day of the first month is also called "Shangyuan Festival". Since ancient times, the custom of Lantern Festival has been based on the warm and festive custom of watching lanterns. The formation of the Lantern Festival has a long process, which is rooted in the ancient custom of turning on the lights to pray. According to general data and folklore, the fifteenth day of the first month was paid attention to in the Western Han Dynasty, but the Lantern Festival on the fifteenth day of the first month really became a national folk festival after the Han and Wei Dynasties. It has been legal to set off lanterns on the Lantern Festival since the Tang Dynasty.