1827

October 20: British, French and Russian ships defeat the Ottoman Navy in the Battle of Navarino.(*Naval Battle of Navarino* by Ambroise Louis Garneray)

1827 (MDCCCXXVII) was a common year starting on Monday of the Gregorian calendar and a common year starting on Saturday of the Julian calendar, the 1827th year of the Common Era (CE) and Anno Domini (AD) designations, the 827th year of the 2nd millennium, the 27th year of the 19th century, and the 8th year of the 1820s decade. As of the start of 1827, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.

Events

January–March

January 5 – The first regatta in Australia is held, taking place in Tasmania (called at the time Van Diemen's Land), on the River Derwent at Hobart.
January 15 – Furman University, founded in 1826, begins its first classes with 10 students, as the Furman Academy and Theological Institution, located in Edgefield, South Carolina. By the end of 2016, it will have 2,800 students at its main campus in Greenville, South Carolina.
January 27 – Author Johann Wolfgang von Goethe first elaborates on his vision of Weltliteratur (world literature), in a letter to Johann Peter Eckermann, declaring his belief that "poetry is the universal possession of mankind", and that "the epoch of world literature is at hand, and each must work to hasten its coming."
January 30 – The first public theatre in Norway, the Christiania Offentlige Theater, is inaugurated in Christiania (modern-day Oslo).
January – In Laos, King Anouvong of Vientiane leads the Laotian Rebellion against Siam and successfully attacks Nakhon Ratchasima (the Siamese later invade Vientiane and nearly destroy the whole city).
February 20 – Battle of Ituzaingó (Passo do Rosário): A Brazilian Imperial Army force is tactically defeated on the border of Brazil and the United Provinces of the Río de la Plata by Argentine and Uruguayan troops.
February 28 – The Baltimore and Ohio Railroad is incorporated, becoming the first railroad in the United States offering commercial transportation of both people and freight.
March 7 – Brazilian marines sail up the Rio Negro and attack the temporary naval base of Carmen de Patagones, Argentina; they are defeated by the local citizens.
March 11
- The new state constitution for the Mexican state of Coahuila y Tejas is ratified, including a phasing-out of slavery in its Article 13, which declares that "From and after the promulgation of the constitution in the capital of each district, no one shall be born a slave in the state, and after six months the introduction of slaves under any pretext shall not be permitted." The prohibition of importing slaves from the United States is lifted when Texas declares independence in 1836, and the Republic of Texas Constitution will provide specifically that Africans and "the descendants of Africans" will not be considered "citizens of the republic".
- The predecessor of Qasr El Eyni Hospital and Cairo University School of Medicine is established in Egypt under the direction of Antoine Clot as the first medical school in the region.
March 16 – Freedom's Journal, the first African-American owned and published newspaper in the United States, is founded in New York City by John Russwurm.
March 29 — Thousands crowd the streets of Vienna to attend the funeral of Beethoven after his March 26 death. His contemporaries Franz Schubert, Johann Nepomuk Hummel and Carl Czerny serve as torchbearers and Chancellor Metternich speaks.

April–June

April 7 – John Walker begins selling his invention, the "Lucifer" friction match, in England.
April 8 – Battle of Monte Santiago: A squadron of the Brazilian Imperial Navy defeats Argentine vessels after a two-day naval battle.
April 10 – George Canning succeeds Lord Liverpool as Prime Minister of the United Kingdom.
April 23 – Scottish-born novelist John Galt founds the town of Guelph in Upper Canada.
April 24 – Greek War of Independence: Battle of Phaleron – Ottoman troops defeat the Greek rebels.
April 26 – The Royal Netherlands Navy's British-built paddle steamer Curaçao sets off on the first transatlantic crossing by steam, departing from Hellevoetsluis in the Netherlands to Paramaribo in the Netherlands South American colony of Dutch Guiana. The ship arrives after a voyage of four weeks.
April 29 – The Fly Whisk Incident in Ottoman Algeria: Hussein Dey slaps French consul Pierre Deval on the face, eventually leading to the Invasion of Algiers in 1830.
May 1 – Georg Ohm publishes Die galvanische Kette, mathematisch bearbeitet (tr., The Galvanic Circuit Investigated Mathematically) in which Ohm's law appears for the first time.
May 20 – Zarafa, the first giraffe to be seen in Europe for over three centuries, arrives in Marseille as a gift from the Ottoman Viceroy of Egypt, Mehmet Ali Pasha, to King Charles X of France. The giraffe then begins a 50-day journey to Paris, walking with its handlers toward Paris where it will arrive on July 9.
May 21 – The Maryland Democratic Party is founded by supporters of Andrew Jackson in Baltimore, and hosts its first meeting at the Baltimore Atheneum.
May 24 – The Royal Netherlands Navy's British-built paddle steamer Curaçao completes the first transatlantic crossing by steam, arriving in Paramaribo in Dutch Guiana (now Suriname) four weeks after its April 26 departure from the Netherlands.
May 25 – Romanian inventor Petrache Poenaru receives a French patent for the invention of the first fountain pen.
June 4 – French inventor Joseph Niépce sends a package to Louis Daguerre revealing the existence of his invention, "heliography", where an image can be reproduced onto a pewter plate and then reprinted. In 1829, the two will begin a partnership, and Daguerre will perfect Niépce's photographic process to reproduce images more quickly.
June 7 – Greek defenders in Athens surrender to Egyptian forces under the command of General Rashid Pasha.

July–September

July 6 – Greek War of Independence: The Treaty of London between France, Britain and Russia, demands that the Turks agree to an armistice in Greece.
July 9 – Zarafa, the giraffe given by the Ottoman Viceroy of Egypt to King Charles X of France, arrives at the royal palace in Paris.
July 14 – The Roman Catholic Diocese of Honolulu is founded in the Kingdom of Hawaii.
August 31 – F. J. Robinson, 1st Viscount Goderich, becomes Prime Minister of the United Kingdom following the death of George Canning.
September 4 – The Great Fire of Turku destroys three-quarters of the city (at this time Finland's largest), with 27 human casualties.
September 20 – A petition for a land grant for 215 acres on the north bank of Rio Grande, just across from Paso del Norte (modern-day Ciudad Juárez), is approved; the first residence is built on what is modern-day El Paso, Texas.
September 22 – Joseph Smith will claim in 1838 that on this day he took the golden plates from the place where they had been stored, and that he began writing down the Book of Mormon from them the following December.

October–December

September 30 – Greek War of Independence: Battle of Itea, a naval battle fought in the Gulf of Corinth.
October 1 – Russo-Persian War, 1826–1828: The Russians under Ivan Paskevich storm Yerevan, ending a millennium of Muslim domination in Armenia.
October 20 – Greek War of Independence: Battle of Navarino – British, French and Russian naval forces destroy the Turko-Egyptian fleet in Greece. This is the last naval action to be fought under sail alone.
November 24 – Voting is completed in elections for France's 430 member Chamber of Deputies. The Ultraroyalistes, supporters of King Charles X, lose their 233-seat majority and finish with 180 seats, the same number as the opposition Doctrinaires.
November – The term "socialist" is coined by Robert Owen in his London periodical, The Co-operative Magazine and Monthly Herald.
December 20 – Mexico passes its first "expulsion law", providing for citizens of Spain to be expelled within the next six months, and to remain barred from re-entry until the Kingdom of Spain recognizes Mexico's 1810 declaration of independence. Ultimately, because of all the exemptions within the expulsion act, only 1,779 of the 6,610 Spaniards are required to leave.