24 July 1966

Boris Johnson became Prime Minister of the United Kingdom after winning the Conservative Party leadership election.

Air Algérie Flight 5017 disappeared from radar shortly after take-off from Ouagadougou, Burkina Faso; its wreckage was found the following day in Mali with no survivors.

A gunman entered the United States Capitol and opened fire, killing two police officers.

Iran–Iraq War: In opposition to the American plan to protect Kuwaiti tankers, Iran laid mines and damaged the SS Bridgeton, resulting in a propaganda victory for Iran.

During a speech in Montreal, French president Charles de Gaulle (pictured) declared "Long live free Quebec!", a statement that was interpreted as support for Quebec independence from Canada.

Soviet premier Nikita Khrushchev and U.S. vice president Richard Nixon held an impromptu debate (pictured) at the opening of the American National Exhibition at Sokolniki Park in Moscow.

Australia set a world record for the highest successful run-chase in Test cricket history during the Fourth Test of the Ashes series against England.

The Treaty of Lausanne was signed to settle part of the partition of the Ottoman Empire, establishing the boundaries of Greece, Bulgaria and Turkey.

Franco-Syrian War: At the Battle of Maysalun, forces of the Arab Kingdom of Syria were defeated by a French army moving to occupy the territory allocated to them by the San Remo conference.

Ottoman forces captured the city of Shkodër, ending the Albanian revolt of 1910 (depicted).

Brigham Young led the first group of Mormon pioneers into the Salt Lake Valley of Utah, at the time a part of Mexico.

Mary, Queen of Scots, was forced to abdicate in favour of her one-year-old son, who became James VI.

Scottish clansmen led by Donald of Islay, Lord of the Isles, and Alexander Stewart, Earl of Mar, fought the Battle of Harlaw near Inverurie, Scotland.

Angara Airlines Flight 2311 crashes on approach to Tynda Airport, killing all 48 people on board.

A Saurya Airlines Bombardier CRJ200 crashes during takeoff from Tribhuvan International Airport in Kathmandu, Nepal, killing 18.

Boris Johnson becomes Prime Minister of the United Kingdom after defeating Jeremy Hunt in a leadership contest, succeeding Theresa May.

Air Algérie Flight 5017 loses contact with air traffic controllers 50 minutes after takeoff. It was travelling between Ouagadougou, Burkina Faso and Algiers. The wreckage is later found in Mali. All 116 people on board are killed.

Santiago de Compostela derailment: A high-speed train derails in Spain rounding a curve with an 80 km/h (50 mph) speed limit at 190 km/h (120 mph), killing 78 passengers.

Syrian civil war: The People's Protection Units (YPG) capture the city of Girkê Legê.

Aria Air Flight 1525 crashes at Mashhad International Airport, killing 16.

Air Fiji flight 121 crashes while en route to Nadi, Fiji, killing all 17 people on board.

US supertanker SS Bridgeton collides with mines laid by IRGC, causing a 43-square-meter dent in the body of the oil tanker.

Hulda Crooks, at 91 years of age, climbs Mt. Fuji. Crooks became the oldest person to climb Japan's highest peak.

The Black July anti-Tamil riots begin in Sri Lanka, killing between 400 and 3,000. Black July is generally regarded as the beginning of the Sri Lankan Civil War.