Historical clue formulations

• Language of the Literature Nobelist Rabindranath Tagore — 2021-01-22
• Widely spoken language in India — 2020-03-10
• Most widely spoken native language of India, after Hindi — 2019-06-17
• India's national anthem was originally written in it — 2016-01-07
• Calcutta native — 2006-05-21
• Language from which "jute" comes — 2004-11-05
• Director Satyajit Ray's native tongue — 1997-08-30