379-Theodosius installed as co-emperor of the Eastern Roman Empire by Emperor Gratian, charged with repelling the Goths
1812-After a 10-day siege, Arthur Wellesley, 1st Duke of Wellington, orders British soldiers of the Light and Third Divisions to storm Ciudad Rodrigo during the Peninsular War
1883-The first electric lighting system employing overhead wires, built by Thomas Edison, begins service at Roselle, New Jersey
1943-First Warsaw Ghetto Uprising begins
1966-Indira Gandhi is elected India's first female Prime Minister
2013-Calcium deposits are discovered on Mars by NASA’s Curiosity Rover