20 minutes is about one-one-hundred-thousandth as long as The Civil War (American).
In other words, it's 0.000009520 times the length of The Civil War (American), and the length of The Civil War (American) is 105,000 times that amount.
(a.k.a. War Between the States, a.k.a. the Great Rebellion, a.k.a. the War of the Rebellion) (1861-65) (United States) The deadliest war in American history, the American Civil War is generally considered to have begun on with the attack on Fort Sumter on April 12th, 1861 and to have lasted until the surrender of Robert E. Lee's army on April 9th, 1865 — 2,100,000 minutes. A total of 620,000 American (including Confederate) soldiers are estimated to have lost their lives due to the war.