In History, Today on September 14

The British Empire adopts the Gregorian calendar, skipping 11 days (September 2 was followed by September 14).

Napoleon's French army enters Moscow during the Napoleonic Wars, only to find the city abandoned and largely destroyed by fire.

U.S. President William McKinley dies after being shot by an assassin on September 6, and Theodore Roosevelt is sworn in as the 26th President of the United States.

Dancer Isadora Duncan dies in a car accident in Nice, France.

The Maastricht Resistance in the Netherlands captures the city of Maastricht from German occupation during World War II.

The Soviet probe Luna 2 becomes the first human-made object to reach the Moon, impacting the lunar surface.

The Organization of the Petroleum Exporting Countries (OPEC) is founded at the Baghdad Conference by Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela.

Princess Grace of Monaco, formerly known as Grace Kelly, dies following a car accident the previous day.

The Major League Baseball season is canceled due to a players' strike, marking the first time in 90 years that the World Series is not played.

President George W. Bush declared September 14, 2001, a National Day of Prayer and Remembrance for the victims of the September 11 attacks.

Estonia held a referendum on joining the European Union, with the majority voting in favor of accession.

The United Nations General Assembly adopted the Declaration on the Rights of Indigenous Peoples.

Jeremy Corbyn was elected as the leader of the Labour Party in the United Kingdom.

The Cassini spacecraft ended its mission by diving into Saturn's atmosphere, concluding a 20-year mission.

Drone attacks targeted two major oil facilities in Saudi Arabia, significantly impacting global oil production and escalating tensions in the region.