Uncanny political events

On July 4th, 1826, after reconciling through correspondence their longtime acrimonious political differences, John Adams, second president of the United States, & Thomas Jefferson, who had been Adams’s vice president prior to ascending to the presidency, died on the day they’d both contributed to making Independence Day. On Valentine’s Day, February 14th, 1884, Teddy Roosevelt’s mother & wife died on the same day. Following President John F. Kennedy’s assassination on November 22nd, 1963, continuing a pattern since 1840 of every president elected in the 20-year intervals since then dying in office, many commentators remarked on the curious similarities shared with Abraham Lincoln’s presidency (from Snopes.com), to which others have added spurious anecdotes to the legend: Abraham Lincoln was elected to Congress in 1846; John F. Kennedy was elected to Congress in 1946. Abraham Lincoln was elected President in 1860; John F. Kennedy was elected President in 1960. Both wives lost their children while living in the White House. Both Presidents were shot on a Friday. Both were shot in the head. Lincoln's secretary was named Kennedy; Kennedy's secretary was named Lincoln. Both were succeed by a vice president named Johnson: Andrew Johnson, who succeeded Lincoln, was born in 1808; Lyndon Johnson, who succeeded Kennedy, was born in 1908. Lincoln’s assassin, John Wilkes Booth, ran from the theater and was caught in a warehouse; Kennedy’s killer, Lee Harvey Oswald, ran from a warehouse and was caught in a theater. Booth and Oswald were assassinated before their trials.