) was a common year starting on Sunday
(link will display the full calendar) of the Gregorian calendar
(or a common year starting on Friday
of the 12-day slower Julian calendar
Events of 1815
January - March
April - June
- April 5-April 12 - Mount Tambora in the Dutch East Indies blows its top explosively during an eruption, killing upwards of 92,000 and propelling thousands of tons of aerosols (Sulfide gas compounds) into the upper atmosphere (stratosphere). The high level gases reflect sunlight and cause the widespread cooling (known as a volcanic winter) and heavy rains of 1816, causes snows in June and July in the northern hemisphere, widespread crop failures, and subsequently famine, which is why 1816 becomes known as the Year Without a Summer.
- April 23- The Second Serbian Uprising against Ottoman rule takes place in Takovo, Serbia. By the end of the year Serbia is acknowledged as a semi-independent state; the ideals of the First Serbian Uprising have thus been temporarily achieved.
- May 3 - Battle of Tolentino: Austria defeats the Kingdom of Naples, which quickly ends the Neapolitan War. Joachim Murat, the defeated King of Naples, is forced to flee to Corsica and is later executed.
- May 30 - The Arniston, an East Indiaman repatriating wounded troops to England from Ceylon, is wrecked near Waenhuiskrans, South Africa with the loss of 372 of the 378 people on board.
- June 9 - Congress of Vienna: A new European political situation is set.
- June 16 - Battle of Ligny: Napoleon beats the Prussians.
- June 16 - Battle of Quatre Bras: Marshal Ney gets a marginal win against the British and Allies.
- June 18 - Battle of Waterloo: The Duke of Wellington decisively defeats Napoleon, ending the Napoleonic wars.
- June 22 - Napoleon abdicates again; Napoleon II (1811-32), age 4, rules for two weeks (June 22 to July 7).
July - September
- July 8 - Louis XVIII returns to Paris, and is 'restored' as King of France (he had declared himself king on June 8, 1795, at the death of his nephew, 10-year-old Louis XVII, and had lived in Westphalia, Verona, Russia, and England).
- July 17 - In France, Napoleon surrenders at Rochefort to British forces.
- September - Austria, Prussia and Russia sign a Holy Alliance to uphold the European status quo.
- September 23 - The Great September Gale of 1815 is the first hurricane to strike New England in 180 years.
October - December
January - June
July - December
- See also :Category: 1815 births.
January - June
- January 8 - Edward Pakenham, British general (killed in battle) (b. 1778)
- January 16 - Emma, Lady Hamilton, English mistress of Horatio Nelson (b. 1765)
- February 24 - Robert Fulton, American inventor (b. 1765)
- February 26 - Prince Josias of Coburg, Austrian general (b. 1737)
- March 4 - Frances Abington, English actress (b. 1737)
- March 5 - Franz Mesmer, German developer of hypnotism (b. 1734)
- April 21 - Joseph Winston, American patriot and Congressman from North Carolina (b. 1746)
- June 1 - Louis Alexandre Berthier, French marshal (b. 1753)
- June 16 - Friedrich Wilhelm, Duke of Brunswick, German noble and general (killed in battle) (b. 1771)
- June 18 - Thomas Picton, British general (killed in battle) (b. 1758)
- June 18 - Claude-Etienne Michel, French general (killed in battle) (b. 1772
- June 18 - Guillaume Philibert Duhesme, French general (killed in battle) (b. 1766)
July - December
- See also :Category: 1815 deaths.