Explanation:
Mahaparinirvan Diwas is observed annually on December 6th to mark the death anniversary of Dr. Bhim Rao Ambedkar, the chief architect of the Constitution of India. Dr. Bhim Rao Ambedkar, known as Babasaheb Ambedkar, is known for his significant contribution in shaping India that it is today. This year, the day commemorates Dr. B R Ambedkar’s 65th death anniversary.