India’s national anthem, ‘Jana Gana Mana,’ written and composed by the country’s Nobel Prize-winning poet Rabindranath Tagore was officially declared as India’s National Anthem on January 24, 1950. It was first sung on December 27, 1911, in Calcutta (now Kolkata) during a convention of the Indian National Congress. A formal rendition of 'Jana Gana Mana,' which is written in Bengali Sanskrit, takes 52 seconds.