The United States Department of Justice released a redacted version of the Mueller report about the investigation of Russian influence on the U.S. presidential election to Congress and the public.
A ladle spilled 30 tonnes (33 tons) of molten steel in a factory in Liaoning, China, killing 32 workers.
Operation Grapes of Wrath: Israeli forces shelled Qana, Lebanon, killing at least 100 civilians and injuring more than 110 others at a United Nations compound.
Robert Mugabe became the first prime minister of Zimbabwe, beginning a 37-year period in power.
Aryabhata, India's first satellite, was launched from Kapustin Yar in the Soviet Union.
Controversial American poet Ezra Pound was released from St. Elizabeths Hospital, a psychiatric hospital in Washington, D.C., in which he had been incarcerated for twelve years.
The Republic of Ireland Act 1948 came into force, describing Ireland as a republic and ending its membership in the Commonwealth of Nations.
The final session of the League of Nations concluded in Geneva, with delegates agreeing to transfer much of its assets to the United Nations.
Superman, created by Jerry Siegel and Joe Shuster of DC Comics, made his debut in Action Comics #1, the first true superhero comic book.
World War I: Hit by ground fire, French aviation pioneer Roland Garros (pictured) landed his aircraft behind enemy lines and was taken prisoner by German forces.
The painted ceilings of the Natural History Museum, London, were unveiled when the building opened its doors to the public.
American Civil War: African-American Union soldiers were massacred and mutilated during and after the Battle of Poison Spring.
American Revolutionary War: Colonists Paul Revere and William Dawes, later joined by Samuel Prescott, began a midnight ride to warn residents of Lexington and Concord, Massachusetts, about the impending arrival of British troops.
Glorious Revolution: Provincial militia and citizens in Boston revolted, arresting officials of the Dominion of New England.
A redacted version of the Mueller report is released to the United States Congress and the public.
King Mswati III of Swaziland announces that his country's name will change to Eswatini.
Anti-government protests start in Nicaragua.
The Israeli military commits the Qana massacre in a deliberate shelling of a United Nations compound near the village of Qana in southern Lebanon, killing 106 Lebanese civilians who were taking shelter there and wounding over 100 more.
The United States launches Operation Praying Mantis against Iranian naval forces in the largest naval battle since World War II.
In Israel John Demjanjuk is sentenced to death for war crimes committed in World War II, although the verdict is later overturned.
The Republic of Zimbabwe (formerly Rhodesia) comes into being, with Canaan Banana as the country's first President. The Zimbabwean dollar replaces the Rhodesian dollar as the official currency.
The town of Elmore City, Oklahoma holds its first dance in the town's history.
East African Airways Flight 720 crashes during a rejected takeoff from Addis Ababa Bole International Airport in Addis Ababa, Ethiopia, killing 43.
Twenty-nine nations meet at Bandung, Indonesia, for the first Asian-African Conference.
Gamal Abdel Nasser seizes power in Egypt.
The Republic of Ireland Act comes into force, declaring Éire to be a republic and severing Ireland's "association" with the Commonwealth of Nations.
The Operation Big Bang, the largest non-nuclear man-made explosion to that time, destroys bunkers and military installations on the North Sea island of Heligoland, Germany.
The International Court of Justice holds its inaugural meeting in The Hague, Netherlands.
Jackie Robinson makes his regular season debut for the Montreal Royals of the International League, to make them the first integrated modern professional baseball team.
World War II: Over 1,000 bombers attack the small island of Heligoland, Germany.
Italian resistance movement: In Turin, despite the harsh repressive measures adopted by Nazi-fascists, a great pre-insurrectional strike begins.
World War II: Operation Vengeance, Admiral Isoroku Yamamoto is killed when his aircraft is shot down by U.S. fighters over Bougainville Island.
World War II: The Doolittle Raid on Japan: Tokyo, Yokohama, Kobe and Nagoya are bombed.
Pierre Laval becomes Prime Minister of Vichy France.
Robert Menzies, who became Australia's longest-serving prime minister, is elected as leader of the United Australia Party after the death of Prime Minister Joseph Lyons.
Superman debuts in Action Comics #1 (cover dated June 1938).
A fire kills 118 people at a wooden church in the small Romanian town of Costești, most of them schoolchildren, after starting during Good Friday services.
World War I: During a mine warfare in high altitude on the Dolomites, the Italian troops conquer the Col di Lana held by the Austrian army.
World War I: French pilot Roland Garros is shot down and glides to a landing on the German side of the lines.
The Cunard liner RMS Carpathia brings 705 survivors from the RMS Titanic to New York City.
Joan of Arc is beatified in Rome.
The 7.9 Mw earthquake and fire destroy much of San Francisco, California, killing more than 3,000 people, making one of the worst natural disasters in American history.
The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800 and 2,000.
The St. Andrew's Ambulance Association is granted a royal charter by Queen Victoria.
The Greco-Turkish War is declared between Greece and the Ottoman Empire.
Battle of Dybbøl: A Prussian-Austrian army defeats Denmark and gains control of Schleswig. Denmark surrenders the province in the following peace settlement.
"The Spirits Book" by Allan Kardec is published, marking the birth of Spiritualism in France.
American victory at the battle of Cerro Gordo opens the way for invasion of Mexico.
The University of Alabama is founded in Tuscaloosa, Alabama.
Three-Fifths Compromise: The first instance of black slaves in the United States of America being counted as three-fifths of persons (for the purpose of taxation), in a resolution of the Congress of the Confederation. This was later adopted in the 1787 Constitution.
American Revolution: The British Army advances up the Charles River in Massachusetts to destroy supplies of American militias, while Paul Revere and other riders rapidly warn the countryside.
Real Academia de la Historia ("Royal Academy of History") is founded in Madrid.
Bostonians rise up in rebellion against Sir Edmund Andros.
Trial of Martin Luther begins its second day during the assembly of the Diet of Worms. He refuses to recant his teachings despite the risk of excommunication.
Bona Sforza is crowned as queen consort of Poland.
The cornerstone of the current St. Peter's Basilica is laid.
Peace of Ferrara between Republic of Venice, Duchy of Milan, Republic of Florence and House of Gonzaga: ending of the second campaign of the Wars in Lombardy fought until the Treaty of Lodi in 1454, which will then guarantee the conditions for the development of the Italian Renaissance.
King Æthelred I of Northumbria is murdered in Corbridge by a group led by his ealdormen, Ealdred and Wada. The patrician Osbald is crowned, but abdicates within 27 days.
PinkPantheress, English singer, songwriter, and record producer
Ski Mask the Slump God, American rapper
Divock Origi, Belgian footballer
Aminé, American singer-songwriter
Mika Zibanejad, Swedish ice hockey player
Chloe Bennet, American actress
Wojciech Szczęsny, Polish footballer
Jessica Jung, South Korean-American singer, songwriter, actress, author, fashion designer and businesswoman
Alia Shawkat, American actress
Vanessa Kirby, English actress
Tina Bru, Norwegian politician
Łukasz Fabiański, Polish footballer
America Ferrera, American actress
Miguel Cabrera, Venezuelan baseball player
Audrey Tang, Taiwanese Minister of Digital Affairs and programmer
Kourtney Kardashian, American television personality
Melissa Joan Hart, American actress
Edgar Wright, English filmmaker
Derrick Brooks, American football player
Haile Gebrselassie, Ethiopian runner
Rosa Clemente, American journalist and activist
Eli Roth, American actor, director, producer, and screenwriter
David Tennant, Scottish actor
Saad Hariri, Saudi Arabian-Lebanese businessman and politician, 33rd Prime Minister of Lebanon
Willie Roaf, American football player
Keith DeCandido, American author
Maria Bello, American actress
Niall Ferguson, Scottish historian and academic
Eric McCormack, Canadian-American actor
Conan O'Brien, American television host, comedian, and podcaster
Jeff Dunham, American ventriloquist and comedian
Jane Leeves, English actress and dancer
John Podhoretz, American journalist and author
Yelena Zhupiyeva-Vyazova, Ukrainian runner
Susan Faludi, American journalist, author and feminist
Gabi Delgado-López, Spanish-German singer, co-founder of D.A.F. (died 2020)
Malcolm Marshall, Barbadian cricketer and coach (died 1999)
Eric Roberts, American actor
Robert Greenberg, American pianist and composer
Rick Moranis, Canadian-American actor, comedian, singer and screenwriter
Sk. Mujibur Rahman, Bengali politician
Grigory Sokolov, Russian pianist and composer
Régis Wargnier, French director, producer, and screenwriter
Moses Blah, Liberian general and politician, 23rd President of Liberia (died 2013)
Jerzy Stuhr, Polish actor, director, and screenwriter
James Woods, American actor and producer
Hayley Mills, English actress
Bernard Arcand, Canadian anthropologist and author (died 2009)
Kathy Acker, American author and poet (died 1997)
Philip Jackson, Scottish sculptor and photographer
Michael Beloff, English lawyer and academic
Robert Christgau, American journalist and critic
Jochen Rindt, German-Austrian racing driver (died 1970)
Michael D. Higgins, Irish sociologist and politician, 9th President of Ireland
Joseph L. Goldstein, American biochemist and geneticist, Nobel Prize laureate
Mike Vickers, English guitarist, saxophonist, and songwriter
Glen Hardin, American pianist and arranger
Thomas J. Moyer, American lawyer and judge (died 2010)
Keiko Abe, Japanese marimba player and composer
Jan Kaplický, Czech architect, designed the Selfridges Building (died 2009)
Roger Graef, American-English criminologist, director, and producer (died 2022)
Vladimir Hütt, Estonian physicist and philosopher (died 1997)
Costas Ferris, Egyptian-Greek actor, director, producer, and screenwriter
James Drury, American actor (died 2020)
George Shirley, African-American tenor and educator
Bill Miles, American director and producer (died 2013)
Clive Revill, New Zealand actor and singer (died 2025)
Jean Guillou, French organist (died 2019)
Peter Hordern, English soldier and politician (died 2024)
Karl Josef Becker, German cardinal and theologian (died 2015)
Otto Piene, German sculptor and academic (died 2014)
Samuel P. Huntington, American political scientist, author, and academic (died 2008)
Tadeusz Mazowiecki, Polish journalist and politician, Prime Minister of Poland (died 2013)
Doug Insole, English cricketer (died 2017)
Marcus Schmuck, Austrian mountaineer and author (died 2005)
Clarence "Gatemouth" Brown, American singer-songwriter and guitarist (died 2005)
Barbara Hale, American actress (died 2017)
Jean Richard, French actor and singer (died 2001)
John F. Wiley, American football player and coach (died 2013)
Virginia O'Brien, American actress and singer (died 2001)
Esther Afua Ocloo, Ghanaian entrepreneur and pioneer of microlending (died 2002)
Gabriel Axel, Danish-French actor, director, and producer (died 2014)
André Bazin, French critic and theorist (died 1958)
Shinobu Hashimoto, Japanese director, producer, and screenwriter (died 2018)
Clifton Hillegass, American publisher, founded CliffsNotes (died 2001)
Tony Mottola, American guitarist and composer (died 2004)
Carl Burgos, American illustrator (died 1984)
Joy Davidman, Polish-Ukrainian American poet and author (died 1960)
Claire Martin, Canadian author (died 2014)
Maurice Goldhaber, Ukrainian-American physicist and academic (died 2011)
Miklós Rózsa, Hungarian-American composer and conductor (died 1995)
Sydney Halter, Canadian lawyer and businessman (died 1990)
George H. Hitchings, American physician and pharmacologist, Nobel Prize laureate (died 1998)
Pigmeat Markham, African-American comedian, singer, and dancer (died 1981)
Waldemar Hammenhög, Swedish author (died 1972)
Giuseppe Pella, Italian politician, 32nd Prime Minister of Italy (died 1981)
Al Lewis, American songwriter (died 1967)
László Németh, Hungarian dentist, author, and playwright (died 1975)
Bertha Isaacs, Bahamian teacher, tennis player, politician and women's rights activist (died 1997)
Patrick Hennessy, Irish soldier and businessman (died 1981)
Ardito Desio, Italian geologist and cartographer (died 2001)
Eugene Houdry, French-American mechanical engineer and inventor (died 1962)
Jessie Street, Australian activist (died 1970)
Jaan Anvelt, Estonian educator and politician (died 1937)
Aleksanteri Aava, Finnish poet (died 1956)
Isaac Babalola Akinyele, Nigerian ruler (died 1964)
Leopold Stokowski, English conductor (died 1977)
Sam Crawford, American baseball player, coach, and umpire (died 1968)
Korneli Kekelidze, Georgian philologist and scholar (died 1962)
Vicente Sotto, Filipino lawyer and politician (died 1950)
Ivana Brlić-Mažuranić, Croatian author and poet (died 1938)
Richard Harding Davis, American journalist and author (died 1916)
Count Leopold Berchtold, Austrian-Hungarian politician and diplomat, Joint Foreign Minister of Austria-Hungary (died 1942)
Linton Hope, English sailor and architect (died 1920)
Siegfried Bettmann, founder of the Triumph Motorcycle Company and Mayor of Coventry (died 1955)
Dhondo Keshav Karve, Indian educator and activist, Bharat Ratna Awardee (died 1962)
Alexander Shirvanzade, Armenian playwright and author (died 1935)
Clarence Darrow, American lawyer (died 1938)
Ludwig Levy, German architect (died 1907)
Paul-Émile Lecoq de Boisbaudran, French chemist and academic (died 1912)
Carlos Manuel de Céspedes, Cuban lawyer and activist (died 1874)
Franz von Suppé, Austrian composer and conductor (died 1895)
James McCune Smith, African-American physician, apothecary, abolitionist, and author (died 1865)
William Debenham, English founder of Debenhams (died 1863)
David Ricardo, British economist and politician (died 1823)
Karl Philipp, Prince of Schwarzenberg (died 1820)
Jacques Widerkehr, French cellist and composer (died 1823)
Sir Francis Baring, 1st Baronet, English banker and politician (died 1810)
Jean-Féry Rebel, French violinist and composer (died 1747)
Giacomo Carissimi, Italian priest and composer (died 1674)
Ahmed I, Ottoman Emperor (died 1617)
Thomas Middleton, English Jacobean playwright and poet (died 1627)
William Harrison, English clergyman (died 1593)
Henry II of Navarre (died 1555)
Lucrezia Borgia, daughter of Pope Alexander VI (died 1519)
Ippolita Maria Sforza, Italian noble (died 1484)
Al-Wathiq, Abbasid caliph (died 847)
K'an II, Mayan ruler (died 658)
Gratian, Roman emperor (died 383)
Dickey Betts, American guitarist, singer, songwriter and composer (born 1943)
Mandisa, American gospel singer (born 1976)
Harrison Birtwistle, British composer (born 1934)
Lyra McKee, Irish journalist (born 1990)
Guru Dhanapal, Indian director and producer (born 1959)
Sanford Jay Frank, American screenwriter and producer (born 1954)
Brian Priestman, English conductor and academic (born 1927)
Goran Švob, Croatian philosopher and author (born 1947)
Anne Williams, English activist (born 1951)
Dick Clark, American television host and producer, founded Dick Clark Productions (born 1929)
René Lépine, Canadian businessman and philanthropist (born 1929)
Robert O. Ragland, American musician (born 1931)
K. D. Wentworth, American author (born 1951)
Germaine Tillion, French ethnologist and anthropologist (born 1907)
Kamisese Mara, Fijian politician, 2nd President of Fiji (born 1920)
Thor Heyerdahl, Norwegian ethnographer and explorer (born 1914)
Arturo Frondizi, Argentinian lawyer and politician, 32nd President of Argentina (born 1908)
Oktay Rıfat Horozcu, Turkish poet and playwright (born 1914)
Marcel Pagnol, French author, playwright, and director (born 1895)
Guillermo González Camarena, Mexican engineer (born 1917)
Ben Hecht, American director, producer, and screenwriter (born 1894)
Meyer Jacobstein, American academic and politician (born 1880)
Maurice Gamelin, Belgian-French general (born 1872)
Albert Einstein, German-American physicist, engineer, and academic (born 1879)
Óscar Carmona, Portuguese field marshal and politician, 11th President of Portugal (born 1869)
Jozef Tiso, Slovak priest and politician, President of Slovakia (born 1887)
John Ambrose Fleming, English physicist and engineer, invented the vacuum tube (born 1849)
Ernie Pyle, American journalist and soldier (born 1900)
Isoroku Yamamoto, Japanese admiral (born 1884)
Aleksander Mitt, Estonian speed skater (born 1903)
Gertrude Vanderbilt Whitney, American heiress, sculptor and art collector, founded the Whitney Museum of American Art (born 1875)
George Bryant, American archer (born 1878)
Milton Brown, American singer and bandleader (born 1903)
Ottorino Respighi, Italian composer and conductor (born 1879)
Savina Petrilli, Italian religious leader (born 1851)
Vladimir Serbsky, Russian psychiatrist and academic (born 1858)
Martha Ripley, American physician (born 1843)
Luis Martín, Spanish religious leader, 24th Superior-General of the Society of Jesus (born 1846)
Gustave Moreau, French painter and academic (born 1826)
Paweł Bryliński, Polish sculptor (born 1814)
Justus von Liebig, German chemist and academic (born 1803)
Juris Alunāns, Latvian philologist and linguist (born 1832)
Tatya Tope, Indian general (born 1814)
Jeanne-Elisabeth Chaudet, French painter (born 1761)
Erasmus Darwin, English physician and botanist (born 1731)
Johan Wilcke, Swedish physicist and academic (born 1732)
Charles Pratt, 1st Earl Camden, English lawyer, judge, and politician, Lord Chancellor of Great Britain (born 1714)
Marie-Josephte Corriveau, Canadian murderer (born 1733)
Arvid Horn, Swedish general and politician (born 1664)
Louis Feuillée, French astronomer, geographer, and botanist (born 1660)
George Jeffreys, 1st Baron Jeffreys, Welsh judge and politician, Lord Chancellor of Great Britain (born 1648)
John Graunt, English demographer and statistician (born 1620)
Simonds d'Ewes, English lawyer and politician (born 1602)
Julius Caesar, English judge and politician (born 1557)
John Foxe, English historian and author (born 1516)
Wilhelm von Grumbach, German adventurer (born 1503)
Luigi Alamanni, Italian poet and politician (born 1495)
Polydore Vergil, English historian (born 1470)
John Leland, English poet and historian (born 1502)
John III, Count of Nassau-Siegen, German count
Galdino della Sala, Italian archdeacon and saint
Theobald of Bec, French-English archbishop (born 1090)
Stephen Lekapenos, co-emperor of the Byzantine Empire
Fujiwara no Atsutada, Japanese nobleman and poet (born 906)
Dionysius II, Syriac Orthodox patriarch of Antioch
Perfectus, Spanish monk and martyr
Agallianos Kontoskeles, Byzantine commander and rebel leader
Christian feast day: Apollonius the Apologist
Christian feast day: Corebus
Christian feast day: Cyril VI of Constantinople (Eastern Orthodox Church)
Christian feast day: Eleutherius and Antia
Christian feast day: Galdino della Sala
Christian feast day: Molaise of Leighlin
Christian feast day: Perfectus
Christian feast day: April 18 (Eastern Orthodox liturgics)
Army Day (Iran)
Coma Patients' Day (Poland)
Friend's Day (Brazil)
Independence Day (Zimbabwe)
International Day For Monuments and Sites
Invention Day (Japan)
Victory over the Teutonic Knights in the Battle of the Ice (Russia; Julian Calendar)
World Amateur Radio Day