April 20 in History

Significant events that happened on this day.

Today

Historical Events

2010

The Deepwater Horizon oil rig exploded in the Gulf of Mexico, killing 11 workers

Major

The explosion led to the largest marine oil spill in history, with nearly 5 million barrels of oil released over 87 days. The disaster caused catastro...

2008

Danica Patrick became the first woman to win an IndyCar Series race

Patrick's victory at the Indy Japan 300 broke a significant barrier in professional motorsports. She led 32 laps and won by nearly 6 seconds, proving...

1972

The Apollo 16 lunar module landed on the Moon with astronauts John Young and Charles Duke

Young and Duke spent nearly three days on the lunar surface, conducting experiments and driving the lunar rover. Duke became the youngest person to wa...

1971

The U.S. Supreme Court unanimously upheld the use of busing to achieve racial desegregation in schools

In Swann v. Charlotte-Mecklenburg Board of Education, the Court ruled that busing was an acceptable method to integrate public schools. The decision w...

1964

The BBC broadcast the first episode of Top of the Pops, which became the world's longest-running music show

The first episode featured performances from acts like the Rolling Stones and Dusty Springfield. The show would run for 42 years, airing over 2,200 ep...

1939

Adolf Hitler celebrated his 50th birthday with a massive military parade in Berlin

Nazi Germany staged an elaborate four-hour military display featuring over 50,000 troops, tanks, and aircraft. The propaganda spectacle was designed t...

1902

Marie and Pierre Curie successfully isolated radioactive radium salts from pitchblende

Major

After processing literally tons of uranium ore residue, the Curies isolated one-tenth of a gram of pure radium chloride. This breakthrough work on rad...

1889

Adolf Hitler was born in Braunau am Inn, Austria-Hungary

Major

The future Nazi dictator was born on this date to Alois and Klara Hitler. His birth would lead to one of history's darkest chapters, resulting in Worl...

1657

Freedom of religion was granted to Jews in New Amsterdam (later New York)

Despite director-general Peter Stuyvesant's personal opposition, the Dutch West India Company ordered him to allow Jews to settle and practice their r...

1534

Jacques Cartier began his first voyage to North America from Saint-Malo, France

Cartier's expedition would lead to the first European exploration of the Gulf of St. Lawrence and the St. Lawrence River. His voyages laid the foundat...

Fun Facts from April 20