Today in History- 27th January

International Events: 27th January
Year	Event
1880	Thomas Edison received a patent for his electric incandescent lamp.
1944	The siege of Leningrad ends after 900 days.
1945	The Red Army liberates the biggest concentration camp at Auschwitz in southern Poland.
1967	Three astronauts Grissom, White & Chaffee die in Apollo 1 tragedy.
1980	Exiled Robert Mugabe returns to Rhodesia after five years.