It's about as long as The Longest Pro Baseball Game.
In other words, the length of The Longest Pro Baseball Game is 1 times 8.40 hours.(1981) (McCoy Stadium, Pawtucket, Rhode Island)
The longest professional baseball game in history — a triple-A game between the Pawtucket Red Sox and the Rochester Red Wings — took place between April 18th and 19th, 1981 lasting a total of 8.40 hours (and 33 innings). The Red Sox ultimately won the game 3-2, but not before the game set twelve records, including the most plate appearances by a single player - a three-way tie between Tom Eaton, Dallas Williams, and future Hall-of-Famer Cal Ripken Jr., all of Rochester.
It's about one-and-one-fourth times as long as The First Indianapolis 500.
In other words, 8.40 hours is 1.25330 times the length of The First Indianapolis 500, and the length of The First Indianapolis 500 is 0.797890 times that amount.(a.k.a. Indy 500, a.k.a. International 500-Mile Sweepstakes Race) (1911) (Indianapolis, Indiana)
The first recorded automobile race of its distance, the inaugural Indianapolis 500 was won by Ray Harroun in 6.70220 hours. Haroun's average speed through the race was 120 kph (74.59 mph).
It's about three-fifths as long as The First light bulb test (Edison, 1879).
In other words, 8.40 hours is 0.5790 times the length of The First light bulb test (Edison, 1879), and the length of The First light bulb test (Edison, 1879) is 1.730 times that amount.(Thomas Edison's filament Thread No. 9) (1879) (total time)
Lit at 1:30am on October 22nd, 1879, the first Edison completed his first majorly successful test of his light bulb, which continued to burn for 14.5 hours until the bulb glass succumbed to the heat and cracked, extinguishing the filament. Within 26,300 hours of his success, Edison was selling 45,000 light bulbs per day to large companies across the country.
It's about half as long as The First Transatlantic Flight (Alcock and Brown, 1919).
In other words, 8.40 hours is 0.5190 times the length of The First Transatlantic Flight (Alcock and Brown, 1919), and the length of The First Transatlantic Flight (Alcock and Brown, 1919) is 1.930 times that amount.(John Alcock and Arthur Whitten Brown) (1919) (first non-stop flight)
In an effort to win a £10,000 prize from London's The Daily Mail, John Alcock and Arthur Brown completed a flight from St. John's, Newfoundland to Connemara, Ireland in 16.20 hours in June, 1919. In spite of their fame as aviators, Brown would never fly again after this trip and Alcock would lose his life during a flight to France less than 4,380 hours later.
It's about two times as long as Gone with the Wind (film).
In other words, 8.40 hours is 2.220 times the length of Gone with the Wind (film), and the length of Gone with the Wind (film) is 0.450 times that amount.(1939)
Gone with the Wind, the multiple Academy Award-winning film, had a running time of 3.770 hours for its 1939 copyright release. The scene depicting the burning of the Atlanta Depot cost $25,000 (unadjusted) and was filmed on a 0.16 sq. km (40-acre) set using all seven Technicolor cameras in existence at the time.
It's about one-fourth as long as The Battle of Fort Sumter.
In other words, 8.40 hours is 0.250 times the length of The Battle of Fort Sumter, and the length of The Battle of Fort Sumter is 4 times that amount.(1861)
The first battle of the American Civil War, the Battle of Fort Sumter began with the shelling of the Fort at 4:30 am on April 12th, 1861 and concluded with the surrender of the Fort by its Commander Robert Anderson at about 1:30pm on April 13th, 33 hours later. The Battle's only casualties were the accidental shootings of two Union soldiers during the surrender ceremony.
It's about one-fifth as long as The Great Chicago Fire.
In other words, the length of The Great Chicago Fire is 5 times 8.40 hours.(1871) (Chicago, Illinois)
The Great Chicago Fire started at about 9am and burned for 50 hours between October 8th and October 10th, 1871. Chicago had experienced twenty smaller fires in the 300 hours leading up to the blaze, due to drought conditions, strong winds, and the abundance of wooden buildings at the time.