| 100778 | September 4 | Holiday and observance | Christian feast day:Blessed Catherine of RacconigiMoses and Aaron (Lutheran Church and Eastern Orthodox Church)Paul Jones (Episcopal Church)RosaliaRose of ViterboUltan of ArdbraccanSeptember 4 (Eastern Orthodox liturgics) |
| 100779 | September 4 | Holiday and observance | Immigrant's Day (Argentina) |
| 100780 | September 4 | Holiday and observance | Newspaper Carrier Day (United States) |
| 100781 | September 5 | Event | 917 – Liu Yan declares himself emperor, establishing the Southern Han state in southern China, at his capital of Panyu. |
| 100782 | September 5 | Event | 1590 – Alexander Farnese's army forces Henry IV of France to lift the siege of Paris. |
| 100783 | September 5 | Event | 1661 – Fall of Nicolas Fouquet: Louis XIV Superintendent of Finances is arrested in Nantes by D'Artagnan, captain of the king's musketeers. |
| 100784 | September 5 | Event | 1666 – Great Fire of London ends: Ten thousand buildings including St Paul's Cathedral are destroyed, but only six people are known to have died. |
| 100785 | September 5 | Event | 1697 – War of the Grand Alliance : A French warship commanded by Captain Pierre Le Moyne d'Iberville defeated an English squadron at the Battle of Hudson's Bay. |
| 100786 | September 5 | Event | 1698 – In an effort to Westernize his nobility, Tsar Peter I of Russia imposes a tax on beards for all men except the clergy and peasantry. |
| 100787 | September 5 | Event | 1725 – Wedding of Louis XV and Maria Leszczyńska. |
| 100788 | September 5 | Event | 1774 – First Continental Congress assembles in Philadelphia. |
| 100789 | September 5 | Event | 1781 – Battle of the Chesapeake in the American Revolutionary War: The British Navy is repelled by the French Navy, contributing to the British surrender at Yorktown. |
| 100790 | September 5 | Event | 1793 – French Revolution: The French National Convention initiates the Reign of Terror. |
| 100791 | September 5 | Event | 1798 – Conscription is made mandatory in France by the Jourdan law. |
| 100792 | September 5 | Event | 1812 – War of 1812: The Siege of Fort Wayne begins when Chief Winamac's forces attack two soldiers returning from the fort's outhouses. |
| 100793 | September 5 | Event | 1816 – Louis XVIII has to dissolve the Chambre introuvable ("Unobtainable Chamber"). |
| 100794 | September 5 | Event | 1836 – Sam Houston is elected as the first president of the Republic of Texas. |
| 100795 | September 5 | Event | 1839 – The United Kingdom declares war on the Qing dynasty of China. |
| 100796 | September 5 | Event | 1840 – Premiere of Giuseppe Verdi's Un giorno di regno at La Scala of Milan. |
| 100797 | September 5 | Event | 1862 – American Civil War: The Potomac River is crossed at White's Ford in the Maryland Campaign. |
| 100798 | September 5 | Event | 1862 – James Glaisher, pioneering meteorologist and Henry Tracey Coxwell break world record for altitude whilst collecting data in their balloon. |
| 100799 | September 5 | Event | 1864 – François Achille Bazaine becomes Marshal of France. |
| 100800 | September 5 | Event | 1877 – American Indian Wars: Oglala Sioux chief Crazy Horse is bayoneted by a United States soldier after resisting confinement in a guardhouse at Fort Robinson in Nebraska. |
| 100771 | September 4 | Death | 2014 – Joan Rivers, American comedian and television host (b. 1933) |
| 100772 | September 4 | Death | 2015 – Graham Brazier, New Zealand singer-songwriter (Hello Sailor) (b. 1952) |
| 100773 | September 4 | Death | 2015 – Chandra Bahadur Dangi, Nepalese dwarf (b. 1939) |
| 100774 | September 4 | Death | 2015 – Jean Darling, American actress and singer (b. 1922) |
| 100775 | September 4 | Death | 2015 – Wilfred de Souza, Indian surgeon and politician, 7th Chief Minister of Goa (b. 1927) |
| 100776 | September 4 | Death | 2015 – Warren Murphy, American author and screenwriter (b. 1933) |
| 100777 | September 4 | Death | 2015 – Rico Rodriguez, Cuban-English trombonist (Jools Holland's Rhythm and Blues Orchestra) (b. 1934) |