"Frankenstein" Published
Jan 1 Mary Shelley's "Frankenstein; or, The Modern Prometheus" is published anonymously by the small London publishing house of Lackington, Hughes, Harding, Mavor, & Jones
- Jan 1 Official reopening of the White House
Childe Harold's Pilgrimage
Jan 2 Lord Byron completes the long narrative poem "Childe Harold's Pilgrimage" (4th canto)
- Jan 2 The British Institution of Civil Engineers is founded.
- Jan 21 Keats writes his poem "On a Lock of Milton's Hair"
"When I Have Fears"
Jan 30 John Keats composes his sonnet "When I Have Fears"
Battle of Cancha Rayada
Mar 16 Second Battle of Cancha Rayada - Spanish forces defeat Chileans under José de San Martín
- Mar 18 US Congress approves 1st pensions for government service
- Apr 4 Congress decides on the US flag: 13 red & white stripes & 20 stars
- Apr 5 Battle of Maipú: Chile's independence movement led by Bernardo O'Higgins and José de San Martín win a decisive victory over Spain, leaving 2,000 Spaniards and 1,000 Chilean patriots dead
First Seminole War
Apr 7 General Andrew Jackson conquers Spanish Fort San Marcos (St Marks), in Spanish Florida during his pursuit of the Native American Seminole Tribe, in what would become known as the First Seminole War
- Apr 21 Franz Grillparzer's "Sappho" premieres in Vienna
US-Canada Border Treaty
Apr 28 Rush-Bagot treaty signed between US President James Monroe and Great Britain, demilitarizing the US-Canada border [1]
- May 4 Netherlands & Britain sign treaty against illegal slave handling
- May 24 General Andrew Jackson captures Pensacola, Florida
- May 28 Walk-in-the-Water, 1st steam vessel to sail Lake Erie launched
- Jun 3 Maratha Wars between British and Maratha Confederacy in India ends
Teatro Rossini
Jun 10 Opera venue Teatro Nuovo (now Teatro Rossini) opens with Gioachino Rossini's "La gaza ladra" (The Thieving Magpie") in Pesaro, Italy
- Jul 11 English poet John Keats writes "In the Cottage Where Burns is Born", "Lines Written in the Highlands", and "Gadfly"
- Sep 7 Carl III of Sweden-Norway is crowned king of Norway, in Trondheim
- Sep 23 Border demarcation markers for Moresnet formally installed.
- Sep 30 Congress of Aken: Russia, Austria, Prussia, France & England
- Oct 8 Jack Broughton designed padded gloves first used in a competitive boxing match between 2 unnamed English boxers at Aix-la-Chapelle in France
- Oct 9 Congress of Aken returns to France from Libya
- Oct 19 US Government and Chickasaw Indians sign a treaty
- Oct 20 49th parallel forms as border between US & Canada
- Oct 20 US and Britain agree to joint control of Oregon country
Mendelssohn's 1st Concert
Oct 24 Felix Mendelssohn, aged 9, performs his first public concert in Berlin, Germany
Alexander I
Nov 21 Russia's Tsar Alexander I petitions for a Jewish state in Palestine
- Dec 3 Illinois becomes 21st state USA (Admission day)
- Dec 24 Christmas carol "Silent Night" composed by Franz Xaver Gruber is first sung at St Nicholas parish church in Oberndorf, Austria
- Dec 25 First known Christmas carol, "Silent Night, Holy Night" (Stille Nacht, Heilige Nacht'), is sung in Austria
- Dec 25 Handel's "Messiah", premieres in the US in Boston, performed by The Handel & Haydn Society
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