What happened in 1803
5 entries recorded for 1803, listed by date. That was 223 years ago.
1803 at a glance
- Years ago
- 223 (as of 2026)
- Century
- 19th century
- Decade
- 1800s
- Generation born
- Before the named generations
- Entries here
- 5
- Breakdown
- 5 historical events
February
- February 24
Marbury v. Madison
In Marbury v. Madison, the Supreme Court declared an act of Congress unconstitutional for the first time, forming the basis of judicial review in the United States.
April
- April 26
L'Aigle (meteorite)
Thousands of meteor fragments fell over L'Aigle, France, becoming a milestone in the understanding of meteorites.
- April 30
Louisiana Purchase
The United States purchased France's claim to the Louisiana Territory for 80 million francs, or less than US$.03 per acre ($.07/ha).
September
- September 23
Maratha Empire
Maratha troops were defeated by forces of the British East India Company at the Battle of Assaye, one of the decisive battles of the Second Anglo-Maratha War.
November
- November 30
Balmis Expedition
An expedition led by Francisco Javier de Balmis departed A Coruña, Spain, with the aim of vaccinating millions in South America and Asia against smallpox.
Questions about 1803
What happened in 1803?
This site records 5 entries for 1803, including Marbury v. Madison on February 24. They are listed below by date.
How long ago was 1803?
223 years ago, counting from 2026. Anyone born in 1803 turns 223 this year.
Which century is 1803 in?
1803 falls in the 19th century, in the 1800s.
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