July 16

The Hijrah, Muhammad's migration from Mecca to Medina, begins, an event that later marks the start of the Islamic calendar.

According to Islamic tradition, the Prophet Muhammad and his followers departed Mecca for the city of Medina to escape persecution, an event known as the Hijrah. The migration marked a pivotal turning point in early Islamic history and was later chosen as the starting point of the Islamic lunar calendar.

A papal legate places a bull of excommunication on the altar of Hagia Sophia, an act that formally triggers the East-West Schism dividing Christianity.

A papal representative placed a decree of excommunication against the Patriarch of Constantinople on the altar of Hagia Sophia during a dispute over church authority and doctrine, an act reciprocated by the patriarch days later. The mutual excommunications formalized the East-West Schism, dividing Christianity into the Roman Catholic and Eastern Orthodox branches.

Christian forces from Castile, Aragon, and Navarre decisively defeat the Almohad Caliphate at the Battle of Las Navas de Tolosa, a turning point in the Reconquista.

A coalition of Christian kingdoms from Castile, Aragon, Navarre, and Portugal won a decisive victory over Almohad forces at Las Navas de Tolosa in southern Spain, significantly weakening Muslim power on the Iberian Peninsula. The battle is regarded as a major turning point in the centuries-long Reconquista.

The English Carmelite friar Simon Stock reportedly receives a vision of the Virgin Mary presenting the brown scapular.

Simon Stock, an English prior general of the Carmelite Order, is traditionally credited with the vision at Aylesford in Kent, though the earliest surviving accounts date from over a century later. The brown scapular associated with the vision became a widely used devotional object within the Catholic Church.

Richard II is crowned King of England at age ten.

Richard became king at age ten upon the death of his grandfather, Edward III, since his father, Edward the Black Prince, had died the previous year, and he was crowned at Westminster Abbey soon afterward. His reign would later be shaped by the ongoing Hundred Years' War, the Peasants' Revolt of 1381, and mounting conflict with the English nobility that ultimately led to his deposition in 1399.

Richard II is crowned King of England at Westminster Abbey at the age of ten.

Richard's minority was dominated by powerful noble councillors, and his reign was later marked by the Peasants' Revolt of 1381 and growing conflict with his own barons. He was eventually deposed in 1399 by his cousin, who took the throne as Henry IV.

Stockholms Banco issues Europe's first banknotes, an early milestone in the development of paper currency.

Sweden's central bank precursor, Stockholms Banco, issued the first banknotes in European history, intended to address a shortage of usable coinage caused by heavy, low-value copper currency. Though the bank later collapsed from over-issuance, the innovation laid conceptual groundwork for modern paper currency systems.

Father Junipero Serra establishes Mission San Diego de Alcala, California's first Spanish mission.

Spanish Franciscan missionary Junipero Serra established the first in a chain of California missions near present-day San Diego, aiming to convert local Indigenous populations to Christianity. The mission system profoundly and often violently reshaped Indigenous life along the California coast over the following decades of Spanish colonization.

The Continental Army seizes a fortified British position at the Battle of Stony Point during the American Revolutionary War.

Led by General Anthony Wayne, American troops carried out a daring nighttime bayonet assault on the heavily fortified position overlooking the Hudson River. Though the fort was abandoned soon after due to its indefensibility, the raid boosted American morale during a difficult phase of the war.

The District of Columbia is established as the permanent capital of the United States.

Congress passed legislation establishing a federal district along the Potomac River to serve as the permanent seat of the United States government, resolving earlier debates over locating the capital in an existing state. The city that developed there was later named Washington in honor of the first president.

La Paz declares independence from Spain, forming the Junta Tuitiva, considered the first independent government in Spanish America.

Although the junta was suppressed by royalist forces within months, the uprising is regarded as an early spark of the broader Spanish American wars of independence that would sweep the continent over the following two decades.

American-born novelist Henry James becomes a naturalised British citizen.

James, who had lived in England for decades and was a devoted admirer of British culture, took citizenship partly as a gesture of solidarity with Britain during the First World War, after the United States had not yet entered the conflict. He died the following year.

The United States conducts the Trinity nuclear test in New Mexico, the first detonation of a nuclear weapon, ushering in the atomic age.

In the New Mexico desert, American scientists working on the Manhattan Project detonated the world's first nuclear weapon, code-named Trinity, producing an explosion far more powerful than most researchers had anticipated. The successful test paved the way for the atomic bombings of Hiroshima and Nagasaki weeks later, ushering in the nuclear age.

The United States detonates the world's first nuclear weapon in the Trinity test near Alamogordo, New Mexico.

The test, the culmination of the Manhattan Project, confirmed the viability of a plutonium implosion-type bomb weeks before atomic weapons were used against Hiroshima and Nagasaki. It ushered in the nuclear age and reshaped global military and political strategy for decades afterward.

J. D. Salinger publishes his novel The Catcher in the Rye.

The novel's account of teenage alienation, narrated by protagonist Holden Caulfield, became one of the most widely read and frequently banned books of the twentieth century, exerting lasting influence on American literature and popular culture.

Apollo 11 launches from Cape Kennedy, Florida, beginning the mission that would land the first humans on the Moon.

The Saturn V rocket carrying astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins lifted off from Florida, beginning the historic mission that would achieve humanity's first crewed lunar landing four days later. Millions watched the launch in person and on television, marking a defining moment of the Space Race.

Apollo 11 launches from Cape Kennedy, beginning the mission that would land the first humans on the Moon.

Astronauts Neil Armstrong, Buzz Aldrin, and Michael Collins lifted off atop a Saturn V rocket on a mission that fulfilled President Kennedy's decade-old goal of a crewed lunar landing. Armstrong and Aldrin walked on the lunar surface four days later, on 20 July 1969.

A Sikorsky S-61 helicopter crashes into the sea off the Isles of Scilly, killing twenty people.

The helicopter, operated by British International Helicopters, was carrying passengers on a routine flight between the Scilly Isles and Penzance when it went down in poor weather. It remains one of the deadliest civil helicopter accidents in British aviation history.

Fragments of Comet Shoemaker-Levy 9 begin colliding with Jupiter, providing astronomers with an unprecedented direct observation of a cosmic impact event.

Fragments of a comet that had broken apart under Jupiter's gravity began slamming into the planet's atmosphere over the course of about a week, producing massive dark scars visible even through amateur telescopes. It was the first time astronomers directly observed a collision between two solar system bodies.

Comet Shoemaker-Levy 9 begins colliding with Jupiter, the first observed collision of two Solar System bodies.

The comet had broken into more than twenty fragments after a close approach to Jupiter the previous year, and observatories around the world watched as the pieces struck the planet over several days. The impacts left dark scars in Jupiter's atmosphere visible for months.