SALERNO, ITALY - AUGUST 22: The full moon, the third full moon of summer 2021, on August 22, 2021 in Salerno, Italy. There have already been two full moons (June 24 and July 24) and will have a fourth on September 21. It is an 'extra' moon called 'Blue Moon' by the Anglo-Saxon world. (Photo by Ivan Romano/Getty Images)