The famed Mathematician Srinivasa Ramanujan’s birth anniversary on December 22 is celebrated as National Mathematics Day. It was in 2012 that then Prime Minister Manmohan Singh declared December 22 as National Mathematics Day.
In 1917, Ramanujan was elected to be a member of the London Mathematical Society. In 1918 he also became a Fellow of the Royal Society, becoming the youngest person to achieve the feat. He passed away on April 6, 1920.
Source- The Indian Express