Historical eventSeptember 71822

Pedro I of Brazil

Pedro I declared the independence of Brazil from Portugal, establishing the Empire of Brazil (flag pictured).

Everything on September 7Original source

In context

When
Saturday, September 7 1822204 years ago
Category
Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
Era
19th century · 1820s
Recorded from
Wikipedia “On this day” feed

Russia, Greece and some other countries used the Julian calendar into the early 20th century, so local records may show a date up to 13 days earlier.

At a glance

Dates: From 1822.

Type: human.

What happened

Pedro I declared the independence of Brazil from Portugal, establishing the Empire of Brazil (flag pictured).

September 7 through the years

Other entries on the same calendar day, in order.

  1. 1822Pedro I of Brazil
  2. 20052005 Egyptian presidential election
  3. 2008Federal takeover of Fannie Mae and Freddie Mac
  4. 2010Fishing trawler
  5. 20102010 Senkaku boat collision incident
  6. 2011Lokomotiv Yaroslavl plane crash
  7. 2012Canada–Iran relations
  8. 20172017 Chiapas earthquake
  9. 2019Oleh Sentsov
  10. 2021National Unity Government of Myanmar
  11. 2021Bitcoin

Also in 1822

  • June 14Royal Astronomical SocietyIn a paper presented to the Royal Astronomical Society, English mathematician Charles Babbage proposed a difference engine (pictured), an…
  • December 9French Academy of SciencesIn a memoir read to the French Academy of Sciences, Augustin-Jean Fresnel coined the terms linear, circular, and elliptical polarization,…
  • March 30East FloridaThe United States merged East Florida and West Florida to create the Florida Territory.
  • November 9USS Alligator (1820)USS Alligator engaged three pirate schooners off the coast of Cuba in one of the West Indies anti-piracy operations of the United States.
  • December 1Pedro I of BrazilPedro I was crowned the first emperor of Brazil, seven weeks after his reign began on his 24th birthday.
  • June 6Alexis St. MartinAlexis St. Martin, a Canadian voyageur, was accidentally shot in the stomach; medical investigations of his injury led to a greater under…
  • September 27Lettre à M. DacierIn a letter to the Académie des Inscriptions et Belles-Lettres in Paris, Jean-François Champollion announced his initial successes in dec…
  • May 26Grue Church fireThe deadliest fire in Norwegian history occurred at a church in Grue, killing at least 113 people.

Everything we record for 1822 →

Sources

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“Pedro I of Brazil”, What's On This Date, https://whatsonthisdate.com/app/event/pedro-i-of-brazil-1822-september-7, accessed October 28, 2026.

Cite the underlying source as well — the source links above go to the record this entry is adapted from.

Questions about this entry

When did Pedro I of Brazil happen?

September 7 1822 — 204 years ago, on a Saturday.

Where does this text come from?

Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints.

How do I cite this page?

Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.

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