India
India is home to two major language families: Indo-Aryan (spoken by about 74% of the population) and Dravidian (spoken by 24% of the population). Other languages spoken in India come from the Austroasiatic and Sino-Tibetan language families. India has no national language. Hindi, with the largest number of speakers, is the official language of the government. English is used extensively in business and administration and has the status of a "subsidiary official language"; it is important in education, especially as a medium of higher education. Each state and union territory has one or more official languages, and the constitution recognises in particular 22 "scheduled languages".
Hindi
On 14 September 1949, the Constituent Assembly of India adopted Hindi written in the Devanagari script as the official language of the Republic of India replacing Urdu's previous usage in British India. To this end, several stalwarts rallied and lobbied pan-India in favor of Hindi, most notably along with Hazari Prasad Dwivedi, Kaka Kalelkar, Maithili Sharan Gupt and Seth Govind Das who even debated in Parliament on this issue. As such, on the 50th birthday of Beohar Rajendra Simha on 14 September 1949, the efforts came to fruition following the adoption of Hindi as the official language. Now, it is celebrated as Hindi Day.