What happened in 1821
4 entries recorded for 1821, listed by date. That was 205 years ago.
1821 at a glance
- Years ago
- 205 (as of 2026)
- Century
- 19th century
- Decade
- 1820s
- Generation born
- Before the named generations
- Entries here
- 4
- Breakdown
- 4 historical events
May
- May 8
Greek War of Independence
Greek War of Independence: At the Battle of Gravia Inn, a 120-man Greek force led by Odysseas Androutsos repulsed an Ottoman army of 8,000 soldiers.
July
- July 28
Peruvian War of Independence
Peruvian War of Independence: Argentine general José de San Martín declared the independence of Peru from the Spanish Empire.
September
- September 15
Act of Independence of Central America
The Province of Guatemala proclaimed the independence of Central America from the Spanish Empire.
- September 28
Declaration of Independence (Mexico)
The Declaration of Independence of the Mexican Empire from Spain was drafted in the National Palace in Mexico City.
Questions about 1821
What happened in 1821?
This site records 4 entries for 1821, including Greek War of Independence on May 8. They are listed below by date.
How long ago was 1821?
205 years ago, counting from 2026. Anyone born in 1821 turns 205 this year.
Which century is 1821 in?
1821 falls in the 19th century, in the 1820s.
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