July 27: José Celso Barbosa Day in Puerto Rico.

• 1214 – Philip II of France decisively won the Battle of Bouvines and took undisputed control of the territories of Anjou, Brittany, Maine, Normandy and the Touraine.

• 1865 – A group of Welsh settlers arrived at Chubut Valley in Argentina's Patagonia region.

• 1949 – The de Havilland Comet, the world's first jet airliner, made its maiden flight.

• 1953 – Korean War: A cease-fire was signed, creating a demilitarized zone approximately 4 km (2.5 miles) wide running across the Korean Peninsula between North and South Korea. (Joint Security Area pictured)

• 1996 – Centennial Olympic Park bombing: A pipe bomb exploded during the 1996 Summer Olympics in Atlanta, Georgia, United States, killing two and injuring 111.

More events on this day... Recent days: July 26 – July 25 – July 24