On this day... September 23:

On this day...

September 23:  National Day in Saudi Arabia (1932); Celebrate Bisexuality Day 1123 – Pope Calixtus II and Holy Roman EmperorHenry V agreed to the Concordat of Worms to put an end to the Investiture Controversy. 1780 – American Revolutionary War: British officer John André was captured by Patriot forces, thereby revealing a plot by Continental Army General Benedict Arnold(pictured) to hand over West Point, New York. 1803 – Maratha troops were beaten by British forces at the Battle of Assaye, one of the decisive battles of the Second Anglo-Maratha War. 1932 – The Kingdom of Nejd and Hejaz merged with Al-Hasa andQatif to form the Kingdom of Saudi Arabia, with Ibn Saud as the firstmonarch and Riyadh as the capital city. 1983 – A bomb placed by the Abu Nidal organisation destroyed Gulf Air Flight 771, flying from Karachi, Pakistan, to Abu Dhabi, UAE, killing all 110 people aboard.