1810 ~ Birthday of Frédéric Chopin, Composer & Pianist.

1872 ~ Yellowstone National Park was established as the world's first national park.

1896 ~ Henri Becquerel discovered radioactivity.

1904 ~ Birthday of Glenn Miller, Bandleader.

1912 ~ Georg Ritter von Trapp, head of the famous Austrian singing family memorialized in the musical The Sound of Music married Agathe.

1927 ~ Birthday of Harry Belafonte, Musician & Actor.

1928 ~ Birthday of Dr. Seymour Papert, South African Mathematician & Artificial Intelligence researcher.

1950 ~ Cold War: Klaus Fuchs was convicted of spying for the Soviet Union by giving them top secret atomic bomb data.

1954 ~ Nuclear testing: The Castle Bravo, a 15-megaton hydrogen bomb, was detonated on Bikini Atoll in the Pacific Ocean, resulting in the worst radioactive contamination ever caused by the United States.

1966 ~ Venera 3 Soviet space probe crashed on Venus becoming the first spacecraft to land on another planet's surface.


Holidays and observances

Tasmania, Australia ~ Eight Hours Day.

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Eudaimonia