What are the important events that happened on June 30? Here are historical events, facts, and some myths about this day.
June 30: Facts & Myths About This Day
June 30 is the 181st day of the year 2025 in the Gregorian calendar. There are 184 days remaining until the end of this year. The day of the week is Monday.
Under the Julian calendar, this day is June 17, 2025 – a Monday. Both day of the week are the same but did you notice the difference with the Gregorian calendar?
When this day started, 1,751,241,600 seconds has elapsed since midnight of January 1, 1970 – the Unix epoch.
Strange as it may, if we name this day after a polygon then it will be called ‘hectaoctacontahenagon’ day.
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Cancer is the zodiac sign of a person born on this day. Pearl is the modern birthstone for this month. Moonstone is the mystical birthstone from Tibetan origin that dates back over a thousand years.
According to the lunisolar Chinese calendar, there are 232 days remaining before the start of the next Chinese New Year.
The ancient Maya civilization believes that the end of the world will happen on December 21, 2012. There are now 4,574 days since this fabled cataclysmic event.
Do people and celebrities interest you? Discover all the June 30 famous birthdays who share your special day. Learn some fun facts about your birthday!
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June 30 Historical Events
- 1422 –Battle of Arbedo between the duke of Milan and the Swiss cantons.
- 1688 –The Immortal Seven issue the Invitation to William (continuing the English rebellion from Rome), which would culminate in the Glorious Revolution.
- 1908 –The Tunguska event occurs in remote Siberia.
- 1935 –The Senegalese Socialist Party holds its first congress.
- 1959 –A United States Air Force F-100 Super Sabre from Kadena Air Base, Okinawa, crashes into a nearby elementary school, killing 11 students plus six residents from the local neighborhood.
- 1971 –Ohio ratifies the 26th Amendment to the U.S. Constitution, reducing the voting age to 18, thereby putting the amendment into effect.
- 1972 –The first leap second is added to the UTC time system.
- 1977 –The Southeast Asia Treaty Organization disbands.
- 1987 –The Royal Canadian Mint introduces the $1 coin, known as the Loonie.
- 1990 –East Germany and West Germany merge their economies.
Who were born on June 30?
- 1685 –John Gay, British writer (d. 1732)
- 1789 –Horace Vernet, French painter and graphic artist (d. 1863)
- 1843 –Ernest Mason Satow, British diplomat (d. 1929)
- 1930 –Thomas Sowell, American economist
- 1952 –Athanassios S. Fokas, Greek mathematician
- 1958 –Esa-Pekka Salonen, Finnish conductor and composer
- 1966 –Wendy Davis, American actress
- 1971 –Anette Michel, Mexican actress
- 1978 –Ben Cousins, Australian football player
- 1981 –Matt Kirk, Canadian football player
Who died on June 30?
- 1660 –William Oughtred, English mathematician (b. 1575)
- 1666 –Alexander Brome, English poet (b. 1620)
- 1857 –Alcide d'Orbigny, French naturalist (b. 1802)
- 1882 –Charles J. Guiteau, American assassin of President James A. Garfield (b. 1841)
- 1934 –Night of the Long Knives murders: Gustav Ritter von Kahr, Prime Minister of Bavaria (b. 1862)
- 1961 –Lee DeForest, American inventor (b. 1873)
- 1984 –Lillian Hellman, American playwright (b. 1905)
- 1993 –Wong Ka Kui, Hong Kong singer (b. 1962)
- 2001 –Joe Henderson, American jazz saxophonist (b. 1937)
- 2009 –Pina Bausch, German choreographer (b. 1940)
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