https://www.youtube.com/watch?v=AOx_tTQlEfY In November 1963, two days after shooting President John F. Kennedy, Lee Harvey Oswald was fatally shot by Jack Ruby in the basement of Dallas Police Headquarters. In September 1964, the Warren Commission came to the controversial conclusion that Oswald had acted alone when assassinating Kennedy. Although controversial, the conclusion was supported by investigations from the Dallas Police Department, the Federal Bureau of Investigation , the United States Secret Service, and the House Select Committee on Assassinations. Source: Wikipedia

On November 22, 1963, US President John F. Kennedy was assassinated while riding in a presidential motorcade through Dallas, Texas. Kennedy was fatally shot from the nearby Texas School Book Depository by former U.S. Marine Lee Harvey Oswald. The motorcade rushed to Parkland Memorial Hospital, where Kennedy was pronounced dead. Source: Wikipedia

This JFK was assassinated on November 22, 1963.

https://youtu.be/I5axeez2Jjw In November 1963, President Ngô Đình Diệm was deposed by a group of CIA-backed Army of the Republic of Vietnam officers who disagreed with Diệm's handling of the Buddhist crisis and the North Vietnamese and Viet Cong threat to South Vietnam. The coup, led by General Dương Văn Minh,  captured and executed Diem along with his brother and advisor Ngô Đình Nhu.

In October 1963 the United States Post Office Department published Abbreviations for Use with ZIP Code with a list of 2-letter state abbreviations which are generally written with both letters capitalized. Source: Wikipedia Source: Wikipedia

https://youtu.be/2Ha9GJwlus8 In June 1963, 22 months after the East German communist overnment erected the Berlin Wall to prevent mass emigration to West Berlin, US president John F. Kennedy spoke to a crowd in West Berlin declaring "Ich bin ein Berliner" ( I am a Berliner). Source: Wikipedia

In June 1963 Soviet premier Nichita Khrushchev and American President John F. Kennedy established a direct communication link between their governments — the colloquial imaginary "Red Telephone." The first system used a telex link to type messages that were decoded and translated by military interpreters and forwarded to the country’s commander-in-chief. The first test message, sent from Washington in August 1963 was: ‘The quick brown fox jumped over the lazy dog’s back 1234567890’."

In June 1963 the Soviet cosmonaut, Vladimirovna Tereshkova (born in 1937) was the first woman in space. Flying a solo mission on the Vostok 6 , she orbited the Earth 48 times and spent almost three days in space. Source: Wikipedia

Historica/Wiki In May 1963 nine unarmed Buddhist protesters in the city of Hué were killed with guns and hand grenades by South Vietnamese Army and security forces of the government of Ngô Đình Diệm, a Roman Catholic. The Buddhists had been protesting a government ban on flying the Buddhist flag on the day commemorating the birth of Gautama Buddha. Diệm denied governmental responsibility for the incident and blamed the Việt Cộng. The Buddhist demonstrations continued throughout spring and summer and culminated in June when a Buddhist monk publicly lit himself on fire. The photograph of the event made news around the world. Source: Wikipedia

In April 1963, the Soviet nuclear submarine K-33 collided with the Finnish merchant vessel MS Finnclipper in a mist in the Kattegat strait off the North Sea. With engine noise on the port side of the Finnclipper, the Russian submarine suddenly emerged from the mist. The Finnclipper veered sharply to starboard but was unable to avoid a collision. Without revealing their identity, officers on board the submarine told the Finnish captain that the submarine's side had suffered severe structural damage. The Finns, however, read the number 921 clearly on the side of the submarine, identifying her as the Soviet nuclear submarine K-33. The severely damaged K-33 limped to Murmansk for repairs. Source: Wikipedia

  In April 1963, the atomic submarine USS Thresher sank during deep-diving tests about 350 km (220 mi) east of Cape Cod, Massachusetts, All 129 crew and shipyard personnel aboard were killed Source: Wikipedia.

In January 1963 regular army and civil guard forces of the Republic of Vietnam engaged a Viet Cong battalion at the village of Ap Bac in Dinh Tuong province, 35 miles southwest of Saigon in the Mekong Delta. Unlike the Viet Cong, the South Vietnamese forces enjoyed a 4-1 numerical advantage and were supported by artillery, armor, and helicopters. Nevertheless, the Viet Cong battalion inflicted heavy casualties on the government forces and escaped with minor losses. Three American advisers were killed in the fighting and five helicopters were shot down.                                                  Source: Battle of Ap Bac 1963