Here is a list of things which happened on the 20th of July over the years:
Colombia declared independence from Spain. (1810)
The Congress of the Confederate States began holding sessions in Richmond, Va. (1861)
British Columbia joins the confederation of Canada. (1871)
Ford Motor Company shipped its first car. (1903)
Air mail service begins between New York City and San Francisco. (1921)
Congresswoman Alice Mary Robertson became the first woman to preside over the US House of Representatives. (1921)
In Washington, D.C., police fire tear gas on World War I veterans part of the Bonus Expeditionary Force who attempt to march to the White House. (1932)
Germany: Two-hundred Jewish merchants are arrested in Nuremberg and paraded through the streets. (1933)
Switzerland: A Royal Dutch Airlines plane en route from Milan to Frankfurt crashes into a Swiss mountain, killing thirteen. (1935)
Denmark leaves the League of Nations. (1940)
U.S. President Franklin D. Roosevelt signs the Hatch Act of 1939, limiting political activity by Federal government employees. (1940)
President Franklin D. Roosevelt was nominated for an unprecedented fourth term at the Democratic National Convention in Chicago. (1944)
Adolf Hitler ym”s was only slightly wounded when a bomb planted by would-be assassins exploded at the German leader’s Rastenburg headquarters. (1944)
The US Congress approves the Bretton Woods Agreement. (1945)
World War II: The US Congress’s Pearl Harbor Committee says Franklin D. Roosevelt is completely blameless for the Japanese attack on Pearl Harbor and calls for a unified command structure in the armed forces. (1946)
U.S. President Harry S. Truman issues a peacetime military draft in the United States amid increasing tensions with the Soviet Union. (1948)
In New York City, twelve leaders of the Communist Party USA are indicted under the Smith Act including William Z. Foster and Gus Hall. (1948)
Israel and Syria sign a truce to end their nineteen-month war. (1949)
Cold War: In Philadelphia, Harry Gold pleads guilty to spying for the Soviet Union by passing secrets from atomic scientist Klaus Fuchs. (1950)
King Abdullah I of Jordan is assassinated by a Palestinian while attending Friday prayers in Jerusalem. (1951)
Special Olympics founded. (1968)
Apollo Program: Apollo 11 successfully lands the first man on the Moon. (1969)
Palestianian terrorists hijack a Japan Airlines jet en route from Amsterdam to Japan and force it down in Dubai. (1973)
The Viking 1 lander successfully lands on Mars. (1976)
The Central Intelligence Agency releases documents under the Freedom of Information Act revealing it had engaged in mind control experiments. (1977)
The United Nations Security Council votes 14-0 that member states should not recognise Jerusalem as the capital of Israel. (1980)
A federal appeals court set aside Oliver North’s Iran-Contra convictions. (1990)
In Spain, an ETA bomb at an airport kills 35 (1996)
The leaders of Salt Lake City’s bid to win the 2002 Winter Olympics are indicted by a federal grand jury for bribery, fraud, and racketeering. (2000)
President George W. Bush signed an executive order prohibiting cruel and inhuman treatment, including humiliation or denigration of religious beliefs, in the detention and interrogation of terrorism suspects. (2007)