Under the guidance of Dr. Humphry Osmond, TV presenter Christopher Mayhew ingests 400 mg of mescaline hydrochloride and allows himself to be filmed as part of a Panorama special for BBC TV that is never broadcast.
The first Estadio Ramón de Carranza is inaugurated, in Cádiz, Spain
Died: Duchess Elisabeth Alexandrine of Mecklenburg-Schwerin, 86, German royal consort
The French tug ST Ambes capsizes and sink sin the Gironde Estuary following a collision with US ship SS Lipari, with the loss of three crew.
The 1955 UCI Track Cycling World Championships reach their conclusion, in Milan, Italy.
Istanbul pogrom: Istanbul's Greek minority is the target of a government-sponsored pogrom. Organized mob attacks continue until the following day.
Hurricane Gladys makes landfall 140 mi (230 km) south of Brownsville as a Category 1 hurricane with winds of 85 mph (137 km/h). Vacationers evacuate Padre Island in preparation for the storm. Rainfall peaks at 17.02 in (43.2 cm) in Flour Bluff. In Oso Bay, storm surge is reported to have reached 4.5 ft (1.4 m) in height. Two ships off the Texas coast are feared to have been damaged during the storm: the shrimp boat Mary Ellen, thought to have been beached on Padre Island, and the Don II, missing off Port Aransas, Texas. The United States Coast Guard patrols the coast to rescue stranded people and respond to emergency calls, as well as search for the missing ships.
A secondary low-pressure area forms near *Hurricane Gladys. The circulation area is known as Glasscock, after an offshore oil platform that reports 83 mph (134 km/h) winds during the storm.
The 1955 Individual Speedway World Championship is decided at London's Wembley Stadium, with Peter Craven emerging as champion.
The 16th Venice International Film Festival ends, with Danish drama Ordet winning the Golden Lion award
Hurricane Ione forms in the North Atlantic. Arriving on the heels of Hurricanes Connie and Diane, it would compound problems already caused by the two earlier hurricanes.
Long-running US TV series Gunsmoke is broadcast for the first time, on the CBS-TV network.
The 1955 Italian Grand Prix is run at Autodromo Nazionale Monza, and is won by Juan Manuel Fangio of Argentina.
Martial law is declared in Turkey as a result of the demonstrations of 6–7 September.
Said al-Ghazzi begins his second term as Prime Minister of Syria.
Roger Seydoux becomes France's last Resident-General in Tunisia.
Died: Mehdi Qoli Hedayat, 81, Iranian politician and author, former prime minister.
Pope Pius XII elevates many of the Apostolic vicariates in Africa to Metropolitan Archdioceses.
Long-running UK children's TV series Crackerjack is broadcast for the first time, by the BBC, with Eamonn Andrews as presenter.
Vladimir Nabokov's controversial novel Lolita is published in Paris by Olympia Press.
The East German national airline Deutsche Lufthansa (DLH) makes its first flight, carrying East German prime minister Otto Grotewohl from East Germany to Moscow for a state visit to the Soviet Union.
Gloster Meteor aircraft of the Argentine Air Force attack the Argentine Navy destroyers Cervantes and La Rioja in the River Plate during the Revolución Libertadora against Juan Perón, inflicting numerous casualties.
The Victorian Football League Grand Final is contested by Melbourne Football Club and Collingwood Football Club at the Melbourne Cricket Ground. The match, attended by 88,053 spectators, gives Melbourne their seventh premiership victory.
Argentine Naval Aviation aircraft attack an Argentine Army column during the Revolución Libertadora against Juan Perón, halting the column before it can capture a naval air base.
The United Kingdom formally annexes the uninhabited island of Rockall.
Hurricane Hilda kills about 200 people in Mexico.
Pat Morton becomes Leader of the New South Wales Opposition, replacing Murray Robson.
The President of Argentina, Juan Perón, is ousted in a military coup.
Independent Commercial Television (ITV) begins broadcasting in the United Kingdom.
Kyrenia Castle Escape: Sixteen EOKA prisoners escape from Kyrenia Castle in Cyprus by climbing down sheets tied to be a rope.
In Sumner, Mississippi, USA, an all-white jury acquits both defendants in a trial for the murder of black teenager Emmett Till, after a 67-minute deliberation; one juror says, "If we hadn't stopped to drink pop, it wouldn't have taken that long." J. W. Milam later admits to shooting Till, and says he and his fellow-defendant Roy Bryant did not think that they had done anything wrong.
Dwight D. Eisenhower, President of the United States suffers a coronary thrombosis while on vacation in Denver, Colorado. Vice President Richard Nixon serves as Acting President while Eisenhower recovers.
Canadian Pacific Railway introduces The Atlantic Limited as a limited stop express passenger service from Windsor Station in Montreal, Quebec to Union Station in Saint John, New Brunswick. The named train replaces previous numbered trains and uses a pool of equipment that includes new stainless steel Budd Company cars purchased for The Canadian. Despite running between two Canadian cities, this service is international, since this CPR route runs across the state of Maine (see: International Railway of Maine).
The 1955 All-Ireland Senior Football Championship Final takes place at Croke Park, Dublin, and is won by Kerry.
"America's Sweethearts", showbiz couple Eddie Fisher and Debbie Reynolds, marry. They would divorce within four years.
Operation Sandcastle: UK cargo ship Empire Claire is scuttled with a load of 16,000 German chemical bombs at 56°30′N 12°00′W.
The Yukon general election is held to elect the five members of the Yukon Territorial Council.
The Jaguar Mark 1 2.4 Litre saloon is announced.
The Indonesian legislative election culminates in a major success for the NU, which sees its number of seats in the People's Representative Council increase from 8 to 45.
Thai yacht Lelonta II capsizes and sinks off Capraia, Italy. All twenty on board are rescued, including the owner of the yacht, Prince Biram of Siam.
Died: James Dean, 24, US actor, killed when his automobile collides with another car at a highway junction near Cholame, California.
