| 84391 | July 25 | Holiday and observance | National Day of Galicia (Galicia) |
| 84392 | July 25 | Holiday and observance | Puerto Rico Constitution Day (Puerto Rico) |
| 84393 | July 25 | Holiday and observance | Republic Day (Tunisia) |
| 84394 | July 26 | Event | 657 – First Fitna: In the Battle of Siffin, troops led by Ali ibn Abu Talib clash with those led by Muawiyah I. |
| 84395 | July 26 | Event | 811 – Battle of Pliska: Byzantine Emperor Nikephoros I is killed and his heir Staurakios is seriously wounded. |
| 84396 | July 26 | Event | 920 – Rout of an alliance of Christian troops from Navarre and Léon against the Muslims at Pamplona. |
| 84397 | July 26 | Event | 1309 – Henry VII is recognized King of the Romans by Pope Clement V. |
| 84398 | July 26 | Event | 1469 – Wars of the Roses: The Battle of Edgecote Moor, pitting the forces of Richard Neville, 16th Earl of Warwick against those of Edward IV of England, takes place. |
| 84399 | July 26 | Event | 1509 – The Emperor Krishnadevaraya ascends to the throne, marking the beginning of the regeneration of the Vijayanagara Empire. |
| 84400 | July 26 | Event | 1581 – Plakkaat van Verlatinghe (Act of Abjuration): The northern Low Countries declare their independence from the Spanish king, Philip II. |
| 84401 | July 26 | Event | 1745 – The first recorded women's cricket match takes place near Guildford, England. |
| 84402 | July 26 | Event | 1758 – French and Indian War: The Siege of Louisbourg ends with British forces defeating the French and taking control of the Gulf of Saint Lawrence. |
| 84403 | July 26 | Event | 1775 – The office that would later become the United States Post Office Department is established by the Second Continental Congress. |
| 84404 | July 26 | Event | 1788 – New York ratifies the United States Constitution and becomes the 11th state of the United States. |
| 84405 | July 26 | Event | 1803 – The Surrey Iron Railway, arguably the world's first public railway, opens in south London, United Kingdom. |
| 84406 | July 26 | Event | 1822 – José de San Martín arrives in Guayaquil, Ecuador, to meet with Simón Bolívar. |
| 84407 | July 26 | Event | 1822 – First day of the three-day Battle of Dervenakia, between the Ottoman Empire force led by Mahmud Dramali Pasha and the Greek Revolutionary force led by Theodoros Kolokotronis. |
| 84408 | July 26 | Event | 1847 – Liberia declares its independence. |
| 84409 | July 26 | Event | 1861 – American Civil War: George B. McClellan assumes command of the Army of the Potomac following a disastrous Union defeat at the First Battle of Bull Run. |
| 84410 | July 26 | Event | 1863 – American Civil War: Morgan's Raid ends At Salineville, Ohio, Confederate cavalry leader John Hunt Morgan and 360 of his volunteers are captured by Union forces. |
| 84411 | July 26 | Event | 1882 – Premiere of Richard Wagner's opera Parsifal at Bayreuth. |
| 84412 | July 26 | Event | 1882 – The Republic of Stellaland is founded in Southern Africa. |
| 84413 | July 26 | Event | 1887 – Publication of the Unua Libro, founding the Esperanto movement. |
| 84414 | July 26 | Event | 1890 – In Buenos Aires, Argentina the Revolución del Parque takes place, forcing President Miguel Ángel Juárez Celman's resignation. |
| 84415 | July 26 | Event | 1891 – France annexes Tahiti. |
| 84416 | July 26 | Event | 1897 – Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India. |
| 84417 | July 26 | Event | 1908 – United States Attorney General Charles Joseph Bonaparte issues an order to immediately staff the Office of the Chief Examiner (later renamed the Federal Bureau of Investigation). |
| 84418 | July 26 | Event | 1914 – Serbia and Bulgaria interrupt diplomatic relationship. |
| 84419 | July 26 | Event | 1936 – The Axis powers decide to intervene in the Spanish Civil War. |
| 84420 | July 26 | Event | 1936 – King Edward VIII, in one of his few official duties before he abdicates the thrоne, officially unveils the Canadian National Vimy Memorial. |