2014 Chinese Moon Festival, a.k.a. Chinese Mid-Fall Festival, is on September 08, 2014 in China time zone. In China, "Moon is extraordinary full during Mid- Autumn" has been told from generation to generation. Some people wonder the moon of the Chinese Moon Festival is always a Super Full Moon, which is a Supermoon appears on the Full Moon day.
The "Supermoon" is not an astronomical term. It's from modern astrology. Astrologer Richard Nolle defined a new or full moon which occurs with the moon at or near (within 90% of) its closest approach to Earth.
Supermoon is related to the distance between Earth and Moon. The average distance from Earth to Moon is 382,500 kilometers (237,700 miles). There is no simple formula to determine the Supermoon. In order to memorize easily the number some people adopt this way. If a full moon is closer than 360,000 kilometers (223,694 miles), it is considered a Supermoon. There are more than one Supermoons in a year.
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