Recurrence pattern: every year on November 26.

Constitution Day is observed in India every November 26 to commemorate the adoption of the Constitution of India. Although it is not a public holiday, celebrations take place across the country, organized by local authorities and volunteers. The Constitution was drafted over a period of two years, beginning in the mid-1947, and was officially adopted on November 26, 1949, before coming into force on January 26, 1950. It is notable for being the longest written constitution of any sovereign nation, taking 2 years, 11 months, and 17 days to complete. The original document was drafted in English, with a Hindi translation later prepared by Dr. Bhimrao Ramji Ambedkar, who is recognized as the father of the Constitution. Celebratory activities often include festivals, parades, marches, meetings, and competitions, reflecting the respect and honor that Indians have for their constitutional framework.