While shingles on the skin can include swelling of the eyelid and conjunctivitis, shingles on the eye itself, called herpes zoster ophthalmicus, can cause something much worse â scarring that can lead to vision loss,
Because the time between two full Moons doesn't quite equal a whole month, approximately every three years there are two full Moons in one calendar month. The next time two full Moons occur in the same month (as seen from the United States) will be July 2015. The most recent blue Moon occurred in August 2012.
The festival is held on the 15th day of the 8th month of the lunar calendar with full moon at night, corresponding to late September to early October of the Gregorian calendar with full moon at night. Mainland China listed the festival as an intangible cultural heritage in 2006 and a public holiday in 2008.