Pandemonium Day is celebrated on July 14th of each year. The staff at National Whatever Day has been unable to discover the origin of Pandemonium Day.
Coined by John Milton in “Paradise Lost,” Pandemonium, from ancient Greek (pan) + Late Latin Daemonium (evil spirit, demon). As a Noun pandemonium means a place where all demons live; Hell. Chaos; tumultuous or lawless violence. An outburst; loud, riotous uproar, especially of a crowd.