There's an award ceremony every year, and the 2010 ceremony is going to be held in Cape Canaveral this year. The nominees and winners are also mentioned on the Science Fiction and Fantasy Writers of America website.
The Nebula Awards annually take place between May 14-16 in 2010. The are given out to science fiction and fantasy writers in America. Authors gather once a year to celebrate their great works and fans gather to support their favorite author.