Coffin Night is a holiday celebrated on the HBO original series True Blood. Celebrated annually to commemorate the Great Revelation (in which vampires "came out of the coffin") and the beginning of mainstreaming, Coffin Night is intended to bring humans and vampires together. Both species take part in the festivities, which often involve humans and vampires greeting each other amicably. A common celebratory practice is the burning of coffins. This spectacle can sometimes be dangerous but is meant to symbolize the union between humans and vampires.