240 BC 1st recorded perihelion passage of Halley’s Comet.
1282 The people of Sicily rebelled against the Angevin KingCharles I, in what became known as the Sicilian Vespers.
1296 Edward I sacked Berwick-upon-Tweed, during armed conflict between Scotland and England.
1746 Francisco Goya, Spanish painter, was born (d. 1828).
1811 Robert Bunsen, German chemist, was born (d. 1899).
1814 Napoleonic Wars: Sixth Coalition forces marched into Paris.
1814 – Joachim Murat issued the Rimini Declaration which later inspired Italian Unification.
1820 Anna Sewell, British author, was born (d. 1878).
1842 Anesthesia was used for the first time in an operation by Dr Crawford Long.
1844 One of the most important battles of the Dominican War of Independence from Haiti took place near the city of Santiago de los Caballeros.
1853 Vincent van Gogh, Dutch painter, was born (d. 1890).
1855 Origins of the American Civil War: Bleeding Kansas – “Border Ruffians” from Missouri invaded Kansas and forced election of a pro-slavery legislature.
1856 The Treaty of Paris was signed, ending the Crimean War.
1858 Hymen Lipman patented a pencil with an attached rubber.
1863 Danish prince Wilhelm Georg was chosen as King George of Greece.
1864 Franz Oppenheimer, German sociologist, was born (d. 1943).
1867 Alaska was purchased for $7.2 million, about 2 cent/acre ($4.19/km²), by United States Secretary of State William H. Seward. The media called this Seward’s Folly.
1870 Texas was readmitted to the Union following Reconstruction.
1885 The Battle for Kushka triggered the Pandjeh Incident which nearly gave rise to war between the British and Russian Empires.
1909 The Queensboro Bridge opened, linking Manhattan and Queens.
1910 The Mississippi Legislature founded The University of Southern Mississippi.
1912 Sultan Abdelhafid signed the Treaty of Fez, making Morocco a French protectorate.
1913 Frankie Laine, American singer, was born (d. 2007).
1918 Outburst of bloody March Events in Baku and other locations of Baku Governorate.
1928 Tom Sharpe, English satirical author, was born.
1930 Rolf Harris, Australian artist and entertainer, was born.
1937 Warren Beatty, American actor and director, was born.
1939 The Heinkel He 100 fighter sets a world airspeed record of 463 mph.
1939 – First flight of the Australian C.A.C. CA-16 Wirraway.
1940 – Funeral procession for Prime Minister Michael Joseph Savage.
1940 Sino-Japanese War: Japan declared Nanking to be the capital of a new Chinese puppet government, nominally controlled by Wang Ching-wei.
1941 Graeme Edge, British musician (Moody Blues), was born.
1945 Eric Clapton, British guitarist, was born.
1945 World War II: Soviet Union forces invaded Austria and took Vienna; Polish and Soviet forces liberated Gdańsk.
1945 – World War II: a defecting German pilot delivered a Messerschmitt Me 262A-1 to the Americans.
1949 A riot broke out in Austurvöllur square in Reykjavík, when Iceland joined NATO.
1950 Robbie Coltrane, Scottish actor and comedian, was born.
1954 Yonge Street subway line opened in Toronto, the first subway in Canada.
1959 Peter Hugh McGregor Ellis, who was convicted of child abuse at the Christchurch Civic Creche, was born.
1961 The Single Convention on Narcotic Drugs was signed in New York.
1962 MC Hammer, American rap musician, was born.
1964 Tracy Chapman, American singer, was born,
1965 Vietnam War: A car bomb exploded in front of the US Embassy, Saigon, killing 22 and wounding 183 others.
1967 Fred Ladd flew a plane under Auckland Harbour Bridge.
1968 Celine Dion, Canadian singer, was born.
1972 Vietnam War: The Easter Offensive began after North Vietnamese forces cross into the Demilitarized Zone (DMZ) of South Vietnam.
1979 Airey Neave, a British MP, was killed by a car bomb as left the Palace of Westminster. The Irish National Liberation Army claimed responsibility.
1979 Norah Jones, American musician, was born.
1981 President Ronald Reagan was shot in the chest outside a Washington, D.C., hotel by John Hinckley, Jr.
1982 Space Shuttle programme: STS-3 Mission was completed with the landing of Columbia at White Sands Missile Range, New Mexico.
2004 – Historian Michael King died.
2006 The United Kingdom Terrorism Act 2006 became law.
2009 – Twelve gunmen attacked the Manawan Police Academy in Lahore, Pakistan.
Sourced from NZ History Online & Wikipedia