December 18 in History

The House of Thani is the ruling family of Qatar, with origins tracing back to the Adnanite Banu Tamim tribe. Currently, Tamim bin Hamad Al Thani leads the house.

Count Charles-François Gaston Louis Prosper de Chasseloup-Laubat was a French aristocrat and race car driver.

The Eighteenth Amendment to the United States Constitution established the prohibition of alcohol in the United States. The amendment was proposed by Congress on December 18, 1917, and ratified by the requisite number of states on January 16, 1919. The Eighteenth Amendment was repealed by the Twenty-first Amendment on December 5, 1933, making it the only constitutional amendment in American history to be repealed.

The Lanka Sama Samaja Party, often abbreviated as LSSP, is a major Trotskyist political party in Sri Lanka. It was the first political party in Sri Lanka, having been founded in 1935 by Leslie Goonewardene, N. M. Perera, Colvin R. de Silva, Philip Gunawardena and Robert Gunawardena. The party is currently led by Tissa Vitharana. The party was founded with Leninist ideals, and is classified as a party with socialist aims.

The XX Bomber Command was a United States Army Air Forces bomber formation. Its last assignment was with Twentieth Air Force, based on Okinawa. It was inactivated on 16 July 1945.

On December 18–20, 1957, a significant tornado outbreak sequence affected the southern Midwest and the South of the contiguous United States. The outbreak sequence began on the afternoon of December 18, when a low-pressure area approached the southern portions of Missouri and Illinois. Supercells developed and proceeded eastward at horizontal speeds of 40 to 45 miles per hour, yielding what was considered the most severe tornado outbreak in Illinois on record so late in the calendar year. Total losses in the state were estimated to fall within the range of $8–$10 million.

Saturn is the sixth planet from the Sun and the second largest in the Solar System, after Jupiter. It is a gas giant, with an average radius of about 9 times that of Earth. It has an eighth of the average density of Earth, but is over 95 times more massive. Even though Saturn is almost as big as Jupiter, Saturn has less than a third of its mass. Saturn orbits the Sun at a distance of 9.59 AU (1,434 million km), with an orbital period of 29.45 years.

The Soyuz programme is a human spaceflight programme initiated by the Soviet Union in the early 1960s. The Soyuz spacecraft was originally part of a Moon landing project intended to put a Soviet cosmonaut on the Moon. It was the third Soviet human spaceflight programme after the Vostok (1961–1963) and Voskhod (1964–1965) programmes.

SA de Transport Aérien Flight 730 was a Sud Aviation SE-210 Caravelle 10R aircraft, registered as HB-ICK, that crashed on approach to Funchal Airport, Madeira, on December 18, 1977.

The Lockheed L-188 Electra is an American turboprop airliner built by Lockheed. First flown in 1957, it was the first large turboprop airliner built in the United States. With its fairly high power-to-weight ratio, huge propellers and very short wings resulting in the majority of the wingspan being enveloped in propwash, large Fowler flaps which significantly increased effective wing area when extended, and four-engined design, the airplane had airfield performance capabilities unmatched by many jet transport aircraft even today—particularly on short runways and high altitude airfields. Initial sales were good, but after two fatal crashes that led to expensive modifications to fix a design defect, no more were ordered. Jet airliners soon supplanted turboprops for many purposes, and many Electras were modified as freighters. Some Electras are still being used in various roles into the 21st century. The airframe was also used as the basis for the Lockheed P-3 Orion maritime patrol aircraft.

The 2003 California gubernatorial recall election was a special election permitted under California state law. It resulted in voters replacing incumbent Democratic Governor Gray Davis with Arnold Schwarzenegger, a Republican. The recall effort spanned the latter half of 2003. Seven of the nine previous governors, including Davis, had faced unsuccessful recall attempts.

The 2006–2007 Southeast Asian floods were a series of floods that mostly affected Malaysia from 18 December 2006 to 13 January 2007. The floods were caused by above average rainfall, which was attributed to Typhoon Utor (2006) which had hit the Philippines and Vietnam a few days earlier. By the third week of January 2007, Johor had been affected by a larger flood. Singapore and certain parts of Indonesia were flooded due to the same typhoon.

Kellingley Colliery, known affectionately as the 'Big K', was a deep coal mine in North Yorkshire, England, 3.6 miles (5.8 km) east of Ferrybridge power station. It was owned and operated by UK Coal.

Donald Trump, serving as the 45th president of the United States, was impeached for the first time on December 18, 2019; however, he was not removed from office. On that date, the House of Representatives adopted two articles of impeachment against Trump: abuse of power and obstruction of Congress. On February 5, 2020, the Senate voted to acquit Trump on both articles of impeachment.