June 18

June 18 is the 170th day of the year, and the American record for it runs from 1778 to 2009 — a span of 231 years. The entry that anchors it: American Revolutionary War, 1778.

In the years around independence, the date turns political. In 1778, American Revolutionary War — the British Army abandons Philadelphia.

By the middle of the nineteenth century the date carries heavier freight. In 1812, the United States declaration of war upon the United Kingdom is signed by President James Madison, beginning the War of 1812.

The postwar entries show a nation both expanding and contesting itself. In 1948, Britain, France and the United States announce that on June 21, the Deutsche Mark will be introduced in western Germany and West Berlin. Over the next six days, Communists increasingly restrict access to Berlin.[citation needed]. Five years on, in 1953, a United States Air Force C-124 crashes and burns near Tachikawa, Japan, killing 129. Then, in 1965, Vietnam War — the United States Air Force uses B-52 bombers to attack guerrilla fighters in South Vietnam. Then, in 1979, SALT II is signed by the United States and the Soviet Union. Four years on, in 1983, Aboard Space Shuttle Challenger, astronaut Sally Ride became the first American woman and third one overall in space.

Closer to the present, the date is still accumulating. In 2009, the Lunar Reconnaissance Orbiter (LRO), a NASA robotic spacecraft is launched.

The date is also a birthday. Among the Americans born on June 18: William H. Seward Jr. (1839), American general and banker; E. W. Scripps (1854), American publisher, founded the E. W. Scripps Company; Henry Clay Folger (1857), American businessman and philanthropist, founded the Folger Shakespeare Library; Carolyn Wells (1862), American novelist and poet; and James Montgomery Flagg (1877), American painter and illustrator.

June 18 is also a date of endings. Among the Americans who died on it: Robert Hett Chapman (1833), American minister, missionary, and academic; Arthur Pryor (1942), American trombonist, bandleader, and politician; Florence Bascom (1945), American geologist and educator; and Simon Bolivar Buckner Jr. (1945), American general.

The date carries formal observance as well — National Day (Seychelles). June 18 carries 8 entries spread across 231 years. None of the people in them knew they were sharing a date; that is a pattern only visible looking back.