American swimmer Michael Phelps became the first person to win eight gold medals at one Olympic Games.
Source
William B. Purvis patented the electric switch on railways that would shut off the electric supply after carriages pass the contact device.
Younes Abouyaaqoub drove a van into pedestrians on La Rambla in Barcelona, Spain, killing 14 people and injuring at least 130 others.
A law was passed declaring that the 'Palestinian Pound' could be used as legal tender in Palestine and Israel.
Pope Leo II became the bishop of Rome.
King Charles IX of France became an adult on his 13th birthday.