May 30 is the 150th day of the year in the Gregorian calendar (151st in leap years). There are 215 days remaining.

  1. 1416 - The Roman Catholic Church burns Jerome of Prague following a trial for heresy.
  2. 1431 - Hundred Years' War: In Rouen, France, 19-year-old Joan of Arc burned at the stake by an English-dominated tribunal.
  3. 1434 - Hussite Wars (Bohemian Wars): Battle of Lipany - Effectively ending the war, Utraquist forces led by Diviš Borek of Miletínek defeat and almost annihilated Taborite forces led by Prokop the Great.
  4. 1536 - King Henry VIII of England marries Jane Seymour, a lady-in-waiting to his first two wives.
  5. 1539 - In Florida, Hernando de Soto lands at Tampa Bay with 600 soldiers with the goal of finding gold.
  6. 1574 - Henry III becomes King of France.
  7. 1588 - The last ship of the Spanish Armada sets sail from Lisbon heading for the English Channel.
  8. 1635 - Thirty Years' War: Peace of Prague (1635) signed.
  9. 1806 - Andrew Jackson kills Charles Dickinson in a duel after the man had accused Jackson's wife of bigamy.
  10. 1814 - Napoleonic Wars: War of the Sixth Coalition - Treaty of Paris (1814) signed returning French borders to their 1792 extent.
  11. 1854 - The Kansas-Nebraska Act becomes law establishing the US territories of Nebraska and Kansas.
  12. 1868 - Decoration Day (the predecessor of the modern "Memorial Day") observed in the United States for the first time (By "Commander-in-chief of the Grand Army of the Republic" John A. Logan's proclaimation on May 5).
  13. 1871 - The Paris Commune falls.
  14. 1876 - Ottoman sultan Abd-ul-Aziz is deposed and succeeded by his nephew Murat V.
  15. 1879 - New York City's Gilmores Garden is renamed Madison Square Garden by William Henry Vanderbilt and is opened to the public at 26th Street and Madison Avenue.
  16. 1879 - An F4 tornado strikes Irving, Kansas, killing 18 and injuring 60.
  17. 1883 - In New York City, a rumor that the Brooklyn Bridge is going to collapse causes a stampede which crushes twelve people.
  18. 1911 - At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun becoming the first winner of the 500-mile auto race in his Marmon Wasp.
  19. 1913 - First Balkan War: Treaty of London, 1913 signed ending the war. Albania becomes an independent nation.
  20. 1914 - New & then largest Cunard ocean liner RMS Aquitania, 45,647 tons, sails on her maiden voyage from Liverpool, England to New York City.
  21. 1922 - In Washington, D.C., the Lincoln Memorial is dedicated.
  22. 1935 - Babe Ruth plays in his last baseball game, in the uniform of the Boston Braves.
  23. 1941 - World War II: Germany captures Crete.
  24. 1942 - World War II: 1000 British bombers launch a 90-minute attack on Cologne, Germany.
  25. 1948 - A dike along the flooding Columbia River breaks, obliterating Vanport, Oregon within minutes. Fifteen people die and tens of thousands are left homeless.
  26. 1958 - Memorial Day: The bodies of several unidentified soldiers killed in action during World War II and the Korean War are buried at the Tomb of the Unknowns in Arlington National Cemetery.
  27. 1967 - At the Ascot Speedway in Gardena, California, daredevil Evel Knievel jumps his motorcycle over 16 cars lined-up in a row.
  28. 1967 - The Nigerian Eastern Region declares independence as the Republic of Biafra, sparking a civil war.
  29. 1969 - Riots on the Caribbean island of Curaçao
  30. 1970 - Jimi Hendrix plays at Berkeley Community Theatre one of the last live performances before his death.
  31. 1971 - Mariner program: Mariner 9 launched to Map 70% of the surface and study temporal changes in the atmosphere and surface of Mars.
  32. 1972 - The Angry Brigade goes on trial over a series of 25 bombings throughout Britain.
  33. 1972 - In Tel Aviv, members of the Japanese Red Army carry out the Lod Airport Massacre, killing 24 people and injuring 78 others.
  34. 1975 - Bob Watson, of the Houston Astros scores the 1,000,000th run in baseball history.
  35. 1982 - Spain becomes the 16th member of NATO and the first nation to enter the alliance since West Germany's admission in 1955.
  36. 1989 - Tiananmen Square protests of 1989: The 33-foot high "Goddess of Democracy" statue is unveiled in Tiananmen Square by student demonstrators.
  37. 1997 - The Norway national football team beats Brazil 4-0. They still have never lost to Brazil and are the only team that hasn't.
  38. 1998 - A magnitude 6.6 earthquake hits northern Afghanistan, killing up to 5,000.
  39. 2003 - The final flight of an Air France Concorde.