- in 1715 King Louis XIV of France dies after a reign of 72 years—the longest of any major European monarch.
- in 1752 the Liberty Bell arrives in Philadelphia.
- in 1807 former U.S. President Aaron Burr (of milk commercial fame) is acquitted of treason.
- in 1897 the Boston Subway opens becoming the first underground metro in North America.
- in 1905 Alberta and Saskatchewan join the Canadian Confederation.
- in 1914 the last passenger pigeon, a female named Martha, dies in a zoo in Cincinnati causing the species to go into extinction.
- in 1943 Ital accepts the armistice terms effectively closing one curtain in World War II.
- in 1979 the first spacecraft to visit Saturn, space probe Pioneer 11, passes the planet at a distance of 21,000 km.
- in 1985 a joint American-French expedition locates the remains of the RMS Titanic.
- in 2001 the first orca (killer) whale was born from artificial insemination to Kasatka who resides in one of the national Sea World establishments.
It is also...
- the first day of spring in Australia and New Zealand.
- Uzbekistan Independence day.
- start of the season when oysters are fit to eat.
- the day in Judaic culture when Aaron, the brother of Moses, is remembered.