| 52411 | May.06 | Death | 2015 – Jim Wright, American soldier, lawyer, and politician, 56th Speaker of the United States House of Representatives (b. 1922) |
| 52412 | May.06 | Holiday and observance | Christian Feast Day:Dominic SavioEvodius of Antioch (Roman Catholic Church)François de LavalGerard of LunelLucius of CyrenePetronax of Monte CassinoSt George's Day related observances (Eastern Orthodox Church):Day of Bravery, also known as Gergyovden (Bul |
| 52413 | May.06 | Holiday and observance | Earliest day on which Military Spouse Day can fall, while May 12 is the latest celebrated on Friday before Mother's Day (United States) |
| 52414 | May.06 | Holiday and observance | International No Diet Day |
| 52415 | May.06 | Holiday and observance | Martyrs' Day (Gabon) |
| 52416 | May.06 | Holiday and observance | Martyrs' Day (Lebanon and Syria) |
| 52417 | May.06 | Holiday and observance | Teachers' Day (Jamaica) |
| 52418 | May.06 | Holiday and observance | The first day of Hıdırellez (Turkey) |
| 52419 | May.07 | Event | 351 – The Jewish revolt against Constantius Gallus breaks out. After his arrival at Antioch, the Jews begin a rebellion in Palestine. |
| 52420 | May.07 | Event | 558 – In Constantinople, the dome of the Hagia Sophia collapses. Justinian I immediately orders that the dome be rebuilt. |
| 52421 | May.07 | Event | 1274 – In France, the Second Council of Lyon opens to regulate the election of the Pope. |
| 52422 | May.07 | Event | 1429 – Joan of Arc ends the Siege of Orléans, pulling an arrow from her own shoulder and returning, wounded, to lead the final charge. The victory marks a turning point in the Hundred Years' War. |
| 52423 | May.07 | Event | 1487 – The Siege of Málaga commences during the Spanish Reconquista. |
| 52424 | May.07 | Event | 1664 – Louis XIV of France begins construction of the Palace of Versailles. |
| 52425 | May.07 | Event | 1697 – Stockholm's royal castle (dating back to medieval times) is destroyed by fire. It is replaced by the current Royal Palace in the eighteenth century. |
| 52426 | May.07 | Event | 1718 – The city of New Orleans is founded by Jean-Baptiste Le Moyne, Sieur de Bienville. |
| 52427 | May.07 | Event | 1763 – Pontiac's War begins with Pontiac's attempt to seize Fort Detroit from the British. |
| 52428 | May.07 | Event | 1794 – French Revolution: Robespierre introduces the Cult of the Supreme Being in the National Convention as the new state religion of the French First Republic. |
| 52429 | May.07 | Event | 1824 – World premiere of Ludwig van Beethoven's Ninth Symphony in Vienna, Austria. The performance is conducted by Michael Umlauf under the composer's supervision. |
| 52430 | May.07 | Event | 1832 – The independence of Greece is recognized by the Treaty of London. Otto of Wittelsbach, Prince of Bavaria is chosen king. |
| 52431 | May.07 | Event | 1840 – The Great Natchez Tornado strikes Natchez, Mississippi killing 317 people. It is the second deadliest tornado in United States history. |
| 52432 | May.07 | Event | 1846 – The Cambridge Chronicle, America's oldest surviving weekly newspaper, is published for the first time in Cambridge, Massachusetts |
| 52433 | May.07 | Event | 1847 – The American Medical Association is founded in Philadelphia. |
| 52434 | May.07 | Event | 1864 – American Civil War: The Army of the Potomac, under General Ulysses S. Grant, breaks off from the Battle of the Wilderness and moves southwards. |
| 52435 | May.07 | Event | 1864 – The world's oldest surviving clipper ship, the City of Adelaide is launched by William Pile, Hay and Co. in Sunderland, England, for transporting passengers and goods between Britain and Australia. |
| 52436 | May.07 | Event | 1895 – In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector — a primitive radio receiver. In some parts of the former Soviet Union the anni |
| 52437 | May.07 | Event | 1915 – World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people including 128 Americans. Public reaction to the sinking turns many formerly pro-Germans in the United States against the German Empire |
| 52438 | May.07 | Event | 1915 – Japanese 21 Demands Ultimatum to China (Commemorated as National Day of Humiliation) |
| 52439 | May.07 | Event | 1920 – Kiev Offensive: Polish troops led by Józef Piłsudski and Edward Rydz-Śmigły and assisted by a symbolic Ukrainian force capture Kiev only to be driven out by the Red Army counter-offensive a month later. |
| 52440 | May.07 | Event | 1920 – Treaty of Moscow: Soviet Russia recognizes the independence of the Democratic Republic of Georgia only to invade the country six months later. |