The Spanish Civil Guard intercepts a van loaded with 950 kg of explosives that ETA intended to use to blow up Torre Picasso in Madrid, Spain. Date: December 21, 1999 Read more on Wikipedia → 📅 Other events on December 21 📅 Events on this day in 1999 📅 On This Day (Today)

Iraq War: A suicide bomber kills 22 at the forward operating base next to the main U.S. military airfield at Mosul, Iraq, the single deadliest suicide attack on American soldiers in Iraq. Date: December 21, 2004 Read more on Wikipedia → 📅 Other events on December 21 📅 Events on this day in 2004 📅…

2012 phenomenon: Festivities are held in parts of Mesoamerica to commemorate the conclusion of b'ak'tun 13, a roughly 5,126-year-long cycle in the Mesoamerican Long Count Calendar whose passing many New Age spiritualists had earlier held to portend a variety of cataclysmic or transformative events. Date: December 21, 2012 Read more on Wikipedia → 📅 Other…

A great conjunction of Jupiter and Saturn occurs, with the two planets separated in the sky by 0.1 degrees. This is the closest conjunction between the two planets since 1623. Date: December 21, 2020 Read more on Wikipedia → 📅 Other events on December 21 📅 Events on this day in 2020 📅 On This…

Fourteen people are killed and 25 others injured during a mass shooting at Charles University in Prague, Czech Republic. Date: December 21, 2023 Read more on Wikipedia → 📅 Other events on December 21 📅 Events on this day in 2023 📅 On This Day (Today)

World War I: The last Australian troops are evacuated from Gallipoli. Date: December 20, 1915 Read more on Wikipedia → 📅 Other events on December 20 📅 Events on this day in 1915 📅 On This Day (Today)

Cheka, the first Soviet secret police force, is founded. Date: December 20, 1917 Read more on Wikipedia → 📅 Other events on December 20 📅 Events on this day in 1917 📅 On This Day (Today)

Adolf Hitler is released from Landsberg Prison. Date: December 20, 1924 Read more on Wikipedia → 📅 Other events on December 20 📅 Events on this day in 1924 📅 On This Day (Today)

Captain America Comics #1, containing the first appearance of the superhero Captain America, is published. Date: December 20, 1940 Read more on Wikipedia → 📅 Other events on December 20 📅 Events on this day in 1940 📅 On This Day (Today)

World War II: First battle of the American Volunteer Group, better known as the "Flying Tigers", in Kunming, China. Date: December 20, 1941 Read more on Wikipedia → 📅 Other events on December 20 📅 Events on this day in 1941 📅 On This Day (Today)