SpaceX conducts the world’s first reflight of an orbital class rocket.
Twelve gunmen attack the Manawan Police Academy in Lahore, Pakistan.
Space Shuttle program: STS-3 Mission is completed with the landing of Columbia at White Sands Missile Range, New Mexico.
U.S. President Ronald Reagan is shot in the chest outside a Washington, D.C., hotel by John Hinckley, Jr.; three others are wounded in the same incident.
Airey Neave, a British Member of Parliament, is killed by a car bomb as he exits the Palace of Westminster. The Irish National Liberation Army claims responsibility.
Vietnam War: The Easter Offensive begins after North Vietnamese forces cross into the Demilitarized Zone (DMZ) of South Vietnam.
Vietnam War: A car bomb explodes in front of the United States Embassy, Saigon, killing 22 and wounding 183 others.
The Single Convention on Narcotic Drugs is signed in New York City.
A riot breaks out in Austurvöllur square in Reykjavík, when Iceland joins NATO.
World War II: Soviet forces invade Austria and capture Vienna; Polish and Soviet forces liberate Danzig.
Out of 795 Lancasters, Halifaxes and Mosquitos sent to attack Nuremberg, 95 bombers do not return, making it the largest RAF Bomber Command loss of the war.
World War II: Allied bombers conduct their most severe bombing run on Sofia, Bulgaria.
Second Sino-Japanese War: Japan declares Nanking capital of a new Chinese puppet government, nominally controlled by Wang Jingwei.
The Heinkel He 100 fighter sets a world airspeed record of 463 mph (745 km/h).
Outburst of bloody March Events in Baku and other locations of Baku Governorate.
Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.
German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
The Battle for Kushka triggers the Panjdeh Incident which nearly gives rise to war between the British Empire and Russian Empire.
Texas is readmitted to the Union following Reconstruction.
Alaska is purchased from Russia for $7.2 million, about 2-cent/acre ($4.19/km²), by United States Secretary of State William H. Seward.
Danish prince Wilhelm Georg is chosen as King George of Greece.
The Treaty of Paris is signed, ending the Crimean War.
Origins of the American Civil War: "Border Ruffians" from Missouri invade Kansas and force election of a pro-slavery legislature.
One of the most important battles of the Dominican War of Independence from Haiti takes place near the city of Santiago de los Caballeros.
Ether anesthesia is used for the first time, in an operation by the American surgeon Dr. Crawford Long.
The National Bank of Greece is founded in Athens.
The Florida Territory is created in the United States.
Joachim Murat issues the Rimini Proclamation which would later inspire Italian unification.
Edward I sacks Berwick-upon-Tweed, during armed conflict between Scotland and England.
The people of Sicily rebel against the Angevin king Charles I, in what becomes known as the Sicilian Vespers.
Balkan Campaign: The Avars lift the siege at the Byzantine stronghold of Tomis. Their leader Bayan I retreats north of the Danube River after the Avaro-Slavic hordes are decimated by the plague.