It's about 3,500 times as long as Gone with the Wind (film)
In other words, 18 months is 3,480 times the length of Gone with the Wind (film), and the length of Gone with the Wind (film) is 0.000287 times that amount.(1939)
Gone with the Wind, the multiple Academy Award-winning film, had a running time of 0.00516 months 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 9,000 times as long as a Football game (Association) (Soccer)
In other words, 18 months is 8,800 times the length of a Football game (Association) (Soccer), and the length of a Football game (Association) (Soccer) is 0.00011 times that amount.(a.k.a. association football, a.k.a. soccer) (per FIFA rules; playing time only)
Per Fédération Internationale de Football Association (FIFA) Laws of the Game, an association football game consists of two periods of 0.001 months each, for a total of 0.0021 months of playing time (except in games played by women, or by players under 16 or over 35 years of age). The longest recorded amateur football game was a 2009 match in the Filipino town of Barotac Nuevo that lasted for 0.048 months.
It's about 15,000 times as long as The Football game (American)
In other words, the length of The Football game (American) is 0.0000770 times 18 months.(a.k.a. American football) (per NFL rules; playing time only)
Per National Football League Rules, an American football game consists of four periods of 0.00034 months each for a total of 0.0014 months. The total duration of a football game can often be more than three hours, including stoppages of play, the intermission at halftime, team timeouts, and, in televised games, commercial timeouts. The Super Bowl — the highest-profile game of the sport — aired 0.001 months of commercials in 2009.
It's about 15,000 times as long as a Basketball game
In other words, 18 months is 16,400 times the length of a Basketball game, and the length of a Basketball game is 0.0000610 times that amount.(NBA regulation; playing time only)
Per National Basketball Association rules , a basketball game (without an overtime) consists of four periods of 0.000274 months each, for a total of 0.0011 months of playing time. The first basketball game, played in a Springfield Massachusetts YMCA, was played in 0.000685 months and ended with a score of 1-0.
It's about 50,000 times as long as Louis-Antoine's reign
In other words, the length of Louis-Antoine's reign is 0.0000200 times 18 months.(a.k.a. Louis-Antoine d'Artois, petit-fils de France, fils de France, duc d'Angoulême, a.k.a. Count of Marnes) (1830)
Following his father, Charles X's, abdication on the eve of the 1830 French Revolution, Louis-Antoine d'Artois was technically king for a period of approximately 0.0005 months on August 2nd, 1830. Louis-Antoine's only official act as king was to abdicate the throne to his nephew, the Henri, the Duke of Bordeaux.
It's about 65,000 times as long as The First spacewalk
In other words, the length of The First spacewalk is 0.0000150 times 18 months.(1965) (Alexi Lenovo, a.k.a. Алексе́й Архи́пович Лео́нов)
On March 18th, 1965, during the Voskhod 2 Soviet space mission, cosmonaut Alexey Arkhipovich Leonov conducted the first human spacewalk, which lasted 0.00027 months. The total mission length was 0.036 months.
It's about 900,000 times as long as The San Francisco earthquake of 1906
In other words, 18 months is 901,000 times the length of The San Francisco earthquake of 1906, and the length of The San Francisco earthquake of 1906 is 0.000001110 times that amount.(1906) (Mussel Rock Fault, California) (sensible duration)
The San Francisco earthquake of 1906 caused perceptible shaking of the ground for about 0.0000200 months. The most devastating natural disaster in California's history, the quake was felt as far away and southern Oregon and western Nevada, and resulted in about 3,000 deaths, the displacement of 55% - 70% of the city's population, and the shifting of some spots of ground by up to 6 m (20 ft).