On September 5th, 1793, the Reign of Terror was initiated to strike back against the French Revolution.

On September 4th, 1964, Scotland's Forth Road Bridge officially opened.

On September 3rd, 1976, the Viking 2 took the first close-up, color photographs of Mars.

On September 2nd, 1666, the Great Fire of London broke out and burned for three days.

On September 1st, 1974, the SR-71 Blackbird set the record for shortest flight from New York to London.

On August 31st, 1997, Diana, Princess of Wales, died in a car crash.

On August 30th, 1850, Honolulu, Hawai'i became an official city.

On August 29th, 1756, the Seven Years' War began.

On August 28th, 1884, the first known photograph of a tornado was made.

On August 27th, 1962, the Mariner 2 was launched.

On August 26th, 1862, the Second Battle of Bull Run began.

On August 25th, 1718, the city of New Orleans was founded.

On August 24th, 1853, potato chips were first prepared.

On August 23rd, 1614, the University of Groningen was established.

On August 21st, 1831, Nat Turner led a slave revolt in Southampton County, Virginia.

On August 20th, 1977, the United States launched the Voyager II spacecraft.

On August 19th, 1768, St. Isaac's Cathedral was founded in St. Petersburg, Russia.

On August 18th, 1877, the Martian moon Phobos was discovered.

On August 17th, 1807, the world's first commercial steamboat service was inaugurated by Robert Fulton.

On August 16th, 1896, gold was discovered in the Klondike.