November 5. Guy Fawkes Day, also known as Bon Fire day, commemorates the Nov 5th 1605 efforts by Guy Fawkes and his co-conspirators to blow up King James I. Read more at http://www.history.com/news/guy-fawkes-day-a-brief-history.
Remember, remember the fifth of November,
Gunpowder treason and plot;
I see no reason why Gunpowder Treason
Should ever be forgot.
Image: Festivities in Windsor Castle by Paul Sandby, c. 1776, Public Domain