Hindi Diwas is annually observed on the 14th of September, marking the inception of the celebration in 1949. This recognition followed the acceptance of Hindi as India's official language by the Constituent Assembly on September 14, 1949, acknowledging its prevalence in most regions of the country. The decision to celebrate Hindi Day was made by India's first Prime Minister, Jawaharlal Nehru, and the inaugural Hindi Day was officially observed on September 14, 1953.

Hindi, being the third most spoken language globally, holds significance as the identity of India. The celebration of Hindi Day aims to promote the language within the country and curb any neglect towards Hindi.