30 March Events

March 30 is the 89th day of the year (90th in leap years) in the Gregorian calendar. There are 276 days remaining until the end of the year. This date is slightly more likely to fall on a Monday, Wednesday or Friday (58 in 400 years each) than on Saturday or Sunday (57), and slightly less likely to occur on a Tuesday or Thursday (56).

Events

598 – 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.
1282 – The people of Sicily rebel against the Angevin king Charles I, in what becomes known as the Sicilian Vespers.
1296 – Edward I sacks Berwick-upon-Tweed, during armed conflict between Scotland and England.
1815 – Joachim Murat issues the Rimini Proclamation which would later inspire Italian unification.
1822 – The Florida Territory is created in the United States.
1841 – The National Bank of Greece is founded in Athens.
1842 – Ether anesthesia is used for the first time, in an operation by the American surgeon Dr. Crawford Long.
1844 – One of the most important battles of the Dominican War of Independence from Haiti takes place near the city of Santiago de los Caballeros.
1855 – Origins of the American Civil War: "Border Ruffians" from Missouri invade Kansas and force election of a pro-slavery legislature.
1856 – The Treaty of Paris is signed, ending the Crimean War.
1863 – Danish prince Wilhelm Georg is chosen as King George of Greece.
1867 – 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.
1870 – Texas is readmitted to the Union following Reconstruction.
1885 – The Battle for Kushka triggers the Panjdeh Incident which nearly gives rise to war between the British Empire and Russian Empire.
1899 – German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.
1912 – Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.
1918 – Outburst of bloody March Events in Baku and other locations of Baku Governorate.
1939 – The Heinkel He 100 fighter sets a world airspeed record of 463 mph (745 km/h).
1940 – Second Sino-Japanese War: Japan declares Nanking capital of a new Chinese puppet government, nominally controlled by Wang Jingwei.
1944 – World War II: Allied bombers conduct their most severe bombing run on Sofia, Bulgaria.
1944 – 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.
1945 – World War II: Soviet forces invade Austria and capture Vienna; Polish and Soviet forces liberate Danzig.
1949 – A riot breaks out in Austurvöllur square in Reykjavík, when Iceland joins NATO.
1961 – The Single Convention on Narcotic Drugs is signed in New York City.
1965 – Vietnam War: A car bomb explodes in front of the United States Embassy, Saigon, killing 22 and wounding 183 others.
1972 – Vietnam War: The Easter Offensive begins after North Vietnamese forces cross into the Demilitarized Zone (DMZ) of South Vietnam.
1979 – 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.
1981 – 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.
1982 – Space Shuttle program: STS-3 Mission is completed with the landing of Columbia at White Sands Missile Range, New Mexico.
2009 – Twelve gunmen attack the Manawan Police Academy in Lahore, Pakistan.

Holidays and observances

Christian feast day:
Blessed Amadeus IX, Duke of Savoy
John Climacus
Mamertinus of Auxerre
Quirinus of Neuss
Thomas Son Chasuhn, Marie-Nicolas-Antoine Daveluy (part of The Korean Martyrs)
Tola of Clonard
March 30 (Eastern Orthodox liturgics)
Earliest day on which the first day of Hocktide can fall, while April 3 is the latest; observed on the second Monday after Easter. (Hungerford, England; popular in medieval England)
Land Day (Palestine)
National Doctors' Day (United States)
Spiritual Baptist/Shouter Liberation Day (Trinidad and Tobago)

Source: wikipedia