evidence: And then, quietly, a song took birth at a corner of Calcutta, Jana Gana Mana Adhinayaka Jaya Hey, penned by Rabindranath Tagore. [...] At the stroke of midnight on August 14, 1947, the historic session of the Indian Constituent Assembly opened with Vande Mataram and closed with Jana Gana Mana. [...] On January 24, 1950, when the Assembly met to sign the Constitution of India, President Rajendra Prasad officially declared Jana Gana Mana the national anthem and Vande Mataram the national song.