Example image of eyePlorer eyePlorer map for '1806': Common year starting on Monday Common year starting on Wednesday Gregorian calendar Julian calendar Roman numerals British Empire Cape Colony Colony January 1 January 8 Kingdom of Bavaria Napoleon I of France Cape Town January 10 Netherlands Cape of Good Hope January 19 United Kingdom of Great Britain and Ireland Battle of San Domingo February 6 January 23 Napoleonic Wars Prime Minister of the United Kingdom Royal Navy Santo Domingo William Grenville, 1st Baron Grenville William Pitt the Younger Exploration Lewis and Clark Expedition Louisiana Purchase March 23 Pacific Ocean March 29 National Road United States April 8 Karl, Grand Duke of Baden Stéphanie de Beauharnais Andrew Jackson Duel May 30 Polygamy Emperor June 5 Kingdom of Holland Louis Bonaparte Battle of Maida Calabria France July 4