1820s|Monarch – Christian VII
Prime minister – Christian Günther von Bernstorff
3 March – Battle of West Kay: the Danish brig HDMS Lougen is attacked by two British vessels at West Kay in the Danish West Indies.
2 April – The Battle of Copenhagen takes place.
9 April – A meeting between Crown Prince Frederik and Vice Admiral Lord Nelson at Amalienborg Palace results in a ceasefire. Denmark has to leave the neutrality pact.
6 July – The first vaccination against smallpox in Denmark is made, using the method invented by Edward Jenner.
Exercise is for the first time introduced in the curriculum of a state school in Denmark.
14 June – Peter Wilhelm Lund, natural scientist (died 1880)
24 June – Jørgen Valentin Sonne, painter (died 1890)
13 October – Søren Hjorth, railway pioneer and inventor (died 1870)
21 January – Peter Christian Abildgaard, scientist (born 1740)
1801 in Denmark Wikipedia
Events from the year 1801 in Denmark.