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Equivalents in other units


How long is 4 months?

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It's about one-and-one-tenth times as long as The First artificial heart patient's survival.
In other words, 4 months is 1.09 times the length of The First artificial heart patient's survival, and the length of The First artificial heart patient's survival is 0.917 times that amount.
(1982) (Dr. Barney Bailey Clark; first permanent, pneumatic device)
It's about one-and-one-tenth times as long as The Spanish-American War.
In other words, 4 months is 1.12 times the length of The Spanish-American War, and the length of The Spanish-American War is 0.893 times that amount.
(1898)
The War between Spain and the United States over the liberation of Cuba began on April 25th, 1898 and lasted until the signing of the Treaty of Paris on August 12th, 1898, 3.55 months. The Treaty gave the United States control of Cuba, the Philippines, Puerto Rico, and Guam.
It's about one-and-three-tenths times as long as The First spaceflight (Sputnik).
In other words, the length of The First spaceflight (Sputnik) is 0.77 times 4 months.
(a.k.a. Sputnik 1, a.k.a. Спутник-1, a.k.a. "Satellite-1", a.k.a. Простейший Спутник-1) (1957) (total time in orbit)
Launched from Kazakhstan in 1957, Sputnik was the first artificial satellite placed into orbit around Earth, where it remained for 3 months. During its voyage, it traveled about 70,000,000 km (43,495,983.46 mi), completing an orbit of the planet every 0.0022 months.
It's about one-and-four-fifths times as long as The Voyage of the Mayflower.
In other words, the length of The Voyage of the Mayflower is 0.56 times 4 months.
(1620)
It's about two times as long as Columbus' voyage to America.
In other words, the length of Columbus' voyage to America is 0.5 times 4 months.
(1492) (first voyage)
It's about two-and-a-half times as long as The First US Continental Congress.
In other words, the length of The First US Continental Congress is 0.42 times 4 months.
(1774) (Philadelphia, Pennsylvania)
It's about four times as long as a William Henry Harrison's Presidency.
In other words, 4 months is 3.86 times the length of a William Henry Harrison's Presidency, and the length of a William Henry Harrison's Presidency is 0.2591 times that amount.
(a.k.a. William Henry Harrison, a.k.a. "Tippecanoe," a.k.a. "Old Tippecanoe") (1841)