Christmas Eve – This day is observed on December 24th each year, the day before Christmas, which is a Christian holiday that celebrates the birth of Jesus Christ.
World Arabic Language Day: This day was established by the United Nations Educational, Scientific and Cultural Organization (UNESCO) to promote cultural diversity and multilingualism.
Newtonmas: This is a holiday celebrated by some people who reject traditional religious holidays and instead celebrate the scientific contributions of Sir Isaac Newton.
Quaid-e-Azam’s Day: This is a national holiday in Pakistan that commemorates the birthday of Muhammad Ali Jinnah, the founder of Pakistan.
Constitution Day in Taiwan: This day celebrates the adoption of the Constitution of the Republic of China in 1947, which established the government of Taiwan.
1814: The Treaty of Ghent was signed, ending the War of 1812 between the United States and Great Britain.
1865: Six Confederate veterans formed the Ku Klux Klan in Pulaski, Tennessee.
1906: Canadian physicist Reginald Fessenden became the first person to broadcast a radio program, from Brant Rock, Massachusetts.
1914: During World War I, British and German troops on the Western Front declared a temporary truce to celebrate Christmas.
1943: The Battle of Ortona began during World War II, as Canadian troops fought to capture the Italian town.
1968: The Apollo 8 spacecraft, with astronauts Frank Borman, Jim Lovell, and William Anders aboard, became the first manned spacecraft to orbit the moon.
1991: Soviet President Mikhail Gorbachev resigned, effectively ending the Soviet Union.
2000: The Texas Seven, a group of prisoners who had escaped from a Texas prison, robbed a sporting goods store in Irving, Texas, resulting in a shootout that left one police officer dead.