World Hindi Day commemorates the historic moment in 1949 when Hindi was first spoken in the United Nations General Assembly (UNGA), followed by the first World Hindi Conference inaugurated in 1975 by then-Prime Minister Indira Gandhi. Read this article to know about World Hindi Day or Vishwa Hindi Divas, its theme, history, and significance and activities to be conducted! Hindi Day ( Hindi : हिन्दी दिवस, romanized: Hindī Divas) is observed in India on 14 September each year. It commemorates the adoption of Hindi as one of the official languages of the Republic of India. Celebrate World Hindi Day on January 10, 2025, honouring the global promotion of Hindi and its cultural significance worldwide.