| 90301 | August 9 | Death | 2014 – Ed Nelson, American actor (b. 1928) |
| 90302 | August 9 | Death | 2015 – Frank Gifford, American football player, sportscaster, and actor (b. 1930) |
| 90303 | August 9 | Death | 2015 – John Henry Holland, American computer scientist and academic (b. 1929) |
| 90304 | August 9 | Death | 2015 – Walter Nahún López, Honduran footballer (b. 1977) |
| 90305 | August 9 | Death | 2015 – David Nobbs, English author and screenwriter (b. 1935) |
| 90306 | August 9 | Death | 2015 – Kayyar Kinhanna Rai, Indian journalist, author, and poet (b. 1915) |
| 90307 | August 9 | Holiday and observance | Christian feast day:Candida Maria of JesusEdith SteinFirmus and RusticusHerman of Alaska (Russian Orthodox Church and related congregations Episcopal Church (USA))John VianneyMary Sumner (Church of England)Nath Í of AchonryRomanus OstiariusSecundian, Marc |
| 90308 | August 9 | Holiday and observance | International Day of the World's Indigenous Peoples (International) |
| 90309 | August 9 | Holiday and observance | National Day, celebrates the independence of Singapore from Malaysia in 1965. |
| 90310 | August 9 | Holiday and observance | National Peacekeepers' Day, celebrated on Sunday closest to the day (Canada) |
| 90311 | August 9 | Holiday and observance | National Women's Day (South Africa) |
| 90312 | August 10 | Event | 955 – Battle of Lechfeld: Otto I, Holy Roman Emperor defeats the Magyars, ending 50 years of Magyar invasion of the West. |
| 90313 | August 10 | Event | 991 – Battle of Maldon: The English, led by Byrhtnoth, Ealdorman of Essex, are defeated by a band of inland-raiding Vikings near Maldon, Essex. |
| 90314 | August 10 | Event | 1270 – Yekuno Amlak takes the imperial throne of Ethiopia, restoring the Solomonic dynasty to power after a 100-year Zagwe interregnum. |
| 90315 | August 10 | Event | 1316 – The Second Battle of Athenry takes place near Athenry during the Bruce campaign in Ireland. |
| 90316 | August 10 | Event | 1512 – The naval Battle of Saint-Mathieu, during the War of the League of Cambrai, sees the simultaneous destruction of the Breton ship La Cordelière and the English ship The Regent. |
| 90317 | August 10 | Event | 1519 – Ferdinand Magellan's five ships set sail from Seville to circumnavigate the globe. The Basque second-in-command Juan Sebastián Elcano will complete the expedition after Magellan's death in the Philippines. |
| 90318 | August 10 | Event | 1557 – Battle of St. Quentin: Spanish victory over the French in the Italian War of 1551–59. |
| 90319 | August 10 | Event | 1628 – The Swedish warship Vasa sinks in the Stockholm harbour after only about 20 minutes of her maiden voyage. |
| 90320 | August 10 | Event | 1675 – The foundation stone of the Royal Greenwich Observatory in London, England is laid. |
| 90321 | August 10 | Event | 1680 – The Pueblo Revolt begins in New Mexico. |
| 90322 | August 10 | Event | 1755 – Under the orders of Charles Lawrence, the British Army begins to forcibly deport the Acadians from Nova Scotia to the Thirteen Colonies. |
| 90323 | August 10 | Event | 1776 – American Revolutionary War: Word of the United States Declaration of Independence reaches London. |
| 90324 | August 10 | Event | 1792 – French Revolution: Storming of the Tuileries Palace: Louis XVI of France is arrested and taken into custody as his Swiss Guards are massacred by the Parisian mob. |
| 90325 | August 10 | Event | 1793 – The Musée du Louvre is officially opened in Paris, France. |
| 90326 | August 10 | Event | 1809 – Quito, now the capital of Ecuador, declares independence from Spain. This rebellion will be crushed on August 2, 1810. |
| 90327 | August 10 | Event | 1813 – Instituto Nacional, is founded by the Chilean patriot José Miguel Carrera. It is Chile's oldest and most prestigious school. Its motto is Labor Omnia Vincit, which means "Work conquers all things". |
| 90328 | August 10 | Event | 1821 – Missouri is admitted as the 24th U.S. state. |
| 90329 | August 10 | Event | 1846 – The Smithsonian Institution is chartered by the United States Congress after James Smithson donates $500,000. |
| 90330 | August 10 | Event | 1861 – American Civil War: Battle of Wilson's Creek: The war enters Missouri when a band of raw Confederate troops defeat Union forces in the southwestern part of the state. |