What Happened on April 30?
All
events
births
deaths
holidays
EVENTS ON APRIL 30
J. J. Thomson
Year:
1897
J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
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Hawaii
Year:
1900
Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
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Governor of New York
Year:
1885
Governor of New York David B. Hill signs legislation creating the Niagara Reservation, New York's first state park, ensuring that Niagara Falls will not be devoted solely to industrial and commercial use.
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Camp Grant massacre
Year:
1871
The Camp Grant massacre takes place in Arizona Territory.
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American Civil War
Year:
1864
American Civil War: Confederate forces led by General E. Kirby Smith attack federal troops retreating across the Saline at Jenkins' Ferry, Arkansas.
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Albert Einstein
Year:
1905
Albert Einstein completes his doctoral thesis at the University of Zurich.
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Federal Prison Camp, Alderson
Year:
1927
The Federal Industrial Institute for Women opens in Alderson, West Virginia, as the first women's federal prison in the United States.
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World War II
Year:
1943
World War II: The British submarine HMS Seraph surfaces near Huelva to cast adrift a dead man dressed as a courier and carrying false invasion plans.
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1939 New York World's Fair
Year:
1939
The 1939–40 New York World's Fair opens.
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NBC
Year:
1939
NBC inaugurates its regularly scheduled television service in New York City, broadcasting President Franklin D. Roosevelt's N.Y. World's Fair opening day ceremonial address.
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BIRTHS ON APRIL 30
Jon Bing
Year of birth:
1944
Jon Bing, Norwegian author, scholar, and academic (died 2014)
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Jill Clayburgh
Year of birth:
1944
Jill Clayburgh, American actress (died 2010)
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Frederick Chiluba
Year of birth:
1943
Frederick Chiluba, Zambian politician, 2nd President of Zambia (died 2011)
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Bobby Vee
Year of birth:
1943
Bobby Vee, American pop singer-songwriter (died 2016)
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Michael J. Smith
Year of birth:
1945
Michael J. Smith, American pilot, and astronaut (died 1986)
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Mimi Fariña
Year of birth:
1945
Mimi Fariña, American singer-songwriter, guitarist, and activist (died 2001)
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Don Schollander
Year of birth:
1946
Don Schollander, American swimmer
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Michael Brady (biomedical engineer)
Year of birth:
1945
J. Michael Brady, British radiologist
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Annie Dillard
Year of birth:
1945
Annie Dillard, American novelist, essayist, and poet
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Sallehuddin of Kedah
Year of birth:
1942
Sallehuddin of Kedah, Sultan of Kedah
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DEATHS ON APRIL 30
Emma Smith
Year of death:
1879
Emma Smith, American religious leader (born 1804)
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Jean-Frédéric Waldeck
Year of death:
1875
Jean-Frédéric Waldeck, French explorer, lithographer, and cartographer (born 1766)
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Édouard Manet
Year of death:
1883
Édouard Manet, French painter (born 1832)
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Joseph Leidy
Year of death:
1891
Joseph Leidy, American paleontologist and author (born 1823)
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Casey Jones
Year of death:
1900
Casey Jones, American railroad engineer (born 1864)
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Thomas Cooke (bishop)
Year of death:
1870
Thomas Cooke, Canadian bishop and missionary (born 1792)
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Robert FitzRoy
Year of death:
1865
Robert FitzRoy, English admiral, meteorologist, and politician, 2nd Governor of New Zealand (born 1805)
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Onogawa Kisaburō
Year of death:
1806
Onogawa Kisaburō, Japanese sumo wrestler, the 5th Yokozuna (born 1758)
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Peter Andreas Heiberg
Year of death:
1841
Peter Andreas Heiberg, Danish philologist and author (born 1758)
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Archduke Charles, Duke of Teschen
Year of death:
1847
Charles, Austrian commander and duke of Teschen (born 1771)
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HOLIDAYS ON APRIL 30
International Jazz Day
International Jazz Day (UNESCO)
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April 30 (Eastern Orthodox liturgics)
Christian feast day: April 30 (Eastern Orthodox liturgics)
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Sarah Josepha Hale
Christian feast day: Sarah Josepha Hale (Episcopal Church)
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Armed Forces Day
Armed Forces Day (Georgia)
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Beltane
May Eve, the eve of the first day of summer in the Northern hemisphere (see May 1): Beltane begins at sunset in the Northern hemisphere, Samhain begins at sunset in the Southern hemisphere. (Neo-Druidic Wheel of the Year)
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Walpurgis Night
May Eve, the eve of the first day of summer in the Northern hemisphere (see May 1): Walpurgis Night (Central and Northern Europe)
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List of Teachers' Days
Teachers' Day (Paraguay)
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Rincon, Bonaire
Rincon Day (Bonaire)
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Reunification Day
Reunification Day (Vietnam)
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Persian Gulf naming dispute
National Persian Gulf Day (Iran)
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