After thirteen years the First French Empire abolished the French Republican Calendar in favour of the Gregorian calendar. Events January–March January 11 – The Michigan Territory is created. February 7 – King Anouvong becomes ruler of Vientiane on the death of his brother Inthavong. February 15 – The Harmony Society is officially formed as a Christian community in Harmony, Pennsylvania. March 1 – Justice Samuel Chase is acquitted of impeachment charges by the United States Senate. March 4 – Thomas Jefferson is sworn in for a second term as President of the United States. March 5 – The New Brunswick Legislature passes a bill to advance literacy in the province, which eventually leads to the creation of public education in Canada. April–June April 7 – Beethoven's Symphony No. 3, Eroica, has its public premiere at the Theater an der Wien in Vienna under his baton. April 27 – Battle of Derne: United States Marines and Berbers attack the Tripolitan city of Derna (the Shores of Tripoli). April 29 – Rutger Jan Schimmelpenninck is appointed as Grand Pensionary of the Batavian Republic by Napoleon. May 26 – Napoleon is crowned King of Italy. May 31 – June 2 – Napoleonic Wars: Battle of Diamond Rock – A Franco-Spanish fleet captures the strategic island of Diamond Rock off Martinique in the West Indies, from the British. June 1 – Tuscan-born composer Luigi Boccherini is buried in the Basílica pontificia de San Miguel in Madrid after being found dead on May 28. June 4 The First Barbary War ends between Tripoli and the United States of America. The first Trooping the Colour ceremony is held at the Horse Guards Parade in London. Detroit burns to the ground; most of the city is destroyed. June 13 – Lewis and Clark Expedition in the United States: Scouting ahead of the expedition, Meriwether Lewis and four companions sight the Great Falls of the Missouri River, confirming they are heading in the right direction. July–September July 9 – Muhammad Ali Pasha founds his dynasty in Egypt. July 26 – 1805 Molise earthquake: 5,573 people in Molise and Campania, Italy, are killed. August 12 – Lewis and Clark Expedition: U.S. Army Captain Meriwether Lewis reaches the Continental Divide of the Americas, crossing to the west at Lemhi Pass. August 27 – Napoleon orders the Grande Armée ("The Great Army") of some 165,000 men to march to the Rhine