Historical timeline for July 27

Seven people are killed and many injured after gunmen attack an Indian police station in Punjab.

Ukraine airshow disaster: A Sukhoi Su-27 fighter crashes during an air show at Lviv, Ukraine killing 77 and injuring more than 500 others, making it the deadliest air show disaster in history.

About 50 people are killed in the Si Zerrouk massacre in Algeria.

In Atlanta, United States, a pipe bomb explodes at Centennial Olympic Park during the 1996 Summer Olympics.

The Korean War Veterans Memorial is dedicated in Washington, D.C.

The Jamaat al Muslimeen attempt a coup d'état in Trinidad and Tobago.

While attempting to land at Tripoli International Airport in Libya, Korean Air Flight 803 crashes just short of the runway. Seventy-five of the 199 passengers and crew and four people on the ground are killed, in the second accident involving a DC-10 in less than two weeks, the first being United Airlines Flight 232.

Black July: Eighteen Tamil political prisoners at the Welikada high security prison in Colombo are massacred by Sinhalese prisoners, the second such massacre in two days.

While landing at Chihuahua International Airport, Aeromexico Flight 230 overshoots the runway. Thirty-two of the 66 passengers and crew on board the DC-9 are killed.

Mayor of Jaffna and former MP Alfred Duraiappah is shot dead.

Watergate scandal: The House of Representatives Judiciary Committee votes 27 to 11 to recommend the first article of impeachment (for obstruction of justice) against President Richard Nixon.

Vietnam War: Five thousand more American military advisers are sent to South Vietnam bringing the total number of United States forces in Vietnam to 21,000.

The Puijo observation tower is opened to the general public at Puijo Hill in Kuopio, Finland.

The Continental League is announced as baseball's "third major league" in the United States.

The Austrian State Treaty restores Austrian sovereignty.

El Al Flight 402 is shot down by two fighter jets after straying into Bulgarian air space. All 58 people on board are killed.

Korean War: Cessation of hostilities is achieved when the United States, China, and North Korea sign an armistice agreement. Syngman Rhee, President of South Korea, refuses to sign but pledges to observe the armistice.

Initial flight of the de Havilland Comet, the first jet-powered airliner.

In Vatican City, Rome, canonization of Catherine Labouré, the saint whose apparitions of the Virgin Mary originated the worldwide distribution of the Miraculous Medal.

World War II: Allied forces successfully halt the final Axis advance into Egypt.