Coffin Night is a holiday celebrated on the HBO original series True Blood. Celebrated annually to commemorate the Great Revelation and the beginning of mainstreaming, Coffin Night is intended as to be a holiday that brings humans and vampires together. It is celebrated together by both species, generally involving humans and vampires greeting each other amicably. The customary way of celebrating is to burn coffins. This spectacle can sometimes be dangerous but is meant to symbolize the union between humans and vampires.