Talk:August 12

August 12: Mother's Day in Thailand; International Youth Day

• 1099 – The First Crusade concluded with the Battle of Ascalon and Fatimid forces under Al-Afdal Shahanshah retreating to Egypt.
• 1121 – Forces led by David the Builder decisively won the Battle of Didgori, driving Ilghazi and the Seljuk Turks out of Georgia.
• 1953 – History of nuclear weapons: The first Soviet thermonuclear bomb, Joe 4, was detonated at Semipalatinsk, Kazakh SSR.
• 1985 – Japan Airlines Flight 123 crashed in Gunma Prefecture, Japan, killing 520 of 524 on board in the world's worst single-aircraft aviation disaster.
• 1990 – American paleontologist Sue Hendrickson found the most complete skeleton of a Tyrannosaurus (pictured) near Faith, South Dakota, USA.

More events: August 11 – August 12 – August 13