June 16

June 16 is the 168th day of the year, and the American record for it runs from 1779 to 2015 — a span of 236 years. The entry that anchors it: American businessman Donald Trump announces his campaign to run for President of the United States in the upcoming election, 2015.

In the founding decades, the date sat close to the business of building a republic. In 1779, American Revolutionary War — Spain declares war on the Kingdom of Great Britain, and the Great Siege of Gibraltar begins.

Through the nineteenth century the date gathered the tensions that would define the era. In 1858, Abraham Lincoln delivers his House Divided speech in Springfield, Illinois.

In the decades after the Civil War, the date marked a country remaking itself. In 1897, a treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.

As the country moved into the modern age, the date accumulated new kinds of firsts. In 1933, the National Industrial Recovery Act is passed in the United States, allowing businesses to avoid antitrust prosecution if they establish voluntary wage, price, and working condition regulations on an industry-wide basis.

In the postwar decades the date belonged to a nation of enormous reach and unfinished arguments. In 1963, in an attempt to resolve the Buddhist crisis in South Vietnam, a Joint Communique is signed between President Ngo Dinh Diem and Buddhist leaders. Then, in 1981, US President Ronald Reagan awards the Congressional Gold Medal to Ken Taylor, Canada's former ambassador to Iran, for helping six Americans escape from Iran during the hostage crisis of 1979–81; he is the first foreign citizen bestowed the honor.

In living memory, the date has kept adding to the record. In 2012, the United States Air Force's robotic Boeing X-37B spaceplane returns to Earth after a classified 469-day orbital mission. Three years on, in 2015, American businessman Donald Trump announces his campaign to run for President of the United States in the upcoming election.

The date is also a birthday. Among the Americans born on June 16: Meshech Weare (1713), American farmer, lawyer, and politician, 1st Governor of New Hampshire; Mary Katherine Goddard (1738), American publisher; Wesley Merritt (1836), American general and politician, Military Governor of the Philippines; Cushman Kellogg Davis (1838), American lieutenant and politician, 7th Governor of Minnesota; and William Arnon Henry (1850), American academic and agriculturist.

June 16 is also a date of endings. Among the Americans who died on it: Crawford Long (1878), American surgeon and pharmacist; Vernon Louis Parrington (1929), American historian and scholar; Ezra Fitch (1930), American lawyer and businessman, co-founded Abercrombie & Fitch; and Elmer Ambrose Sperry (1930), American inventor, co-invented the gyrocompass.

The date carries formal observance as well — International Day of the African Child (Organisation of African Unity). Read end to end, June 16 is less a list than a cross-section: 8 entries that happen to share a square on the calendar, separated by as much as 236 years. The coincidence is arbitrary; the accumulation is not.