1591
Science
Baptism (traditional birth date) in Alford, Lincolnshire
Anne Hutchinson was baptized in Alford, Lincolnshire, England — a date historians commonly use as her birth date due to lack of surviving birth records.
View detailsThis Day
20July
23 indexed achievements across recorded history.
1848
Science
Delivers closing address at Seneca Falls Convention
Mott closed the historic Seneca Falls Convention, reinforcing the Declaration of Sentiments that launched the American women's rights movement.
View details1848
Science
Declaration of Sentiments Adopted at Seneca Falls
Stanton's Declaration of Sentiments was debated and adopted on the convention's second day, becoming the movement's founding document.
View details1848
Science
First Organized U.S. Demand for Woman Suffrage
Stanton's suffrage resolution, adopted after fierce debate at Seneca Falls, marked the first organized demand for women's voting rights in the U.S.
View details1848
Science
Declaration of Sentiments Presented
Stanton's Declaration of Sentiments, modeled on the Declaration of Independence, was presented, asserting women's equal rights.
View details1848
Activism
Completion of the Seneca Falls Convention
Conclusion of the First Women’s Rights Convention with Wright's involvement.
View details1910
Literature
Born in Stocksfield, Northumberland, England
Cicely Veronica Wedgwood was born on 20 July 1910 in Stocksfield, Northumberland, England, into the distinguished Wedgwood family.
View details1918
1924
Sports
Olympic bronze medal, women's 400m freestyle, Paris 1924
Ederle earned a second individual Olympic bronze medal, this time in the women's 400-meter freestyle, at the 1924 Paris Games.
View details1924
Science
Olympic gold medal in mixed doubles, Paris 1924
Hazel Wightman won her second Olympic gold medal of the 1924 Paris Games in mixed doubles with partner Richard Norris Williams.
View details1942
Arts
Death in Hano, First Mesa, Arizona
Nampeyo died in her home in Hano, ending a roughly 70-year pottery career that profoundly influenced Hopi-Tewa and broader Pueblo ceramics.
View details1942
Arts
Birth of Stephenie McMillan
Stephenie McMillan was born on July 20, 1942, in Ilford, Essex, England.
View details1957
Science
Induction into the National Lawn Tennis Hall of Fame
Hazel Hotchkiss Wightman was formally inducted into the National Lawn Tennis Hall of Fame in recognition of her decades of championship achievement.
View details1963
Arts
"I Will Follow Him" peaks at No. 6 on German charts
On July 20, 1963, "I Will Follow Him" peaked at No. 6 on the German charts.
View details1965
Science
Co-invention of dynamic instruction handling at IBM ACS project
IBM filed a patent application naming Lynn Conway as co-inventor of dynamic instruction handling, foundational to superscalar computing.
View details1968
Sports
Launch of the Special Olympics
The first Special Olympics were held on July 20, 1968, in Chicago.
View details1974
Politics
Democratic nomination of Ella Grasso for Governor of Connecticut
Connecticut Democrats unanimously nominate Ella T. Grasso for governor by acclamation at their 1974 state convention.
View details1989
Politics
First placement under house arrest
Suu Kyi is detained under the State Protection Act and placed under house arrest, beginning her first long detention.
View details1990
Arts
SD Prize at SD Review
Sejima was awarded the SD Prize at the SD Review, acknowledging her emerging design talent.
View details1991
Politics
Elected leader of the BC Social Credit Party
July 20, 1991: Elected leader of the BC Social Credit Party while serving as Premier.
View details2005
Exploration
Summit of Nanga Parbat
Ascended Nanga Parbat (8,125 m) on July 20, 2005, her eighth eight-thousander.
View details2013
Politics
Death of Helen Thomas
Helen Thomas died on July 20, 2013, in Washington, D.C. at the age of 92.
View details2015
Sports
First woman head coach to win NBA Summer League championship
Hammon led the Spurs' Summer League team to the title, becoming the first woman to win an NBA Summer League championship as head coach.
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