Mahaparinirvan Diwas 2021: History, Interesting Facts and why is it celebrated?

Mahaparinirvan Diwas 2021: Mahaparinirvan Din is observed annually on December 6 to mark the death anniversary of Dr. Bhim Rao Ambedkar, the chief architect of the Constitution of India. Know more about Mahaparinirvan Diwas and some of the interesting facts related to Dr. Babasaheb Ambedkar. 

source https://www.jagranjosh.com/current-affairs/mahaparinirvan-diwas-2021-history-interesting-facts-and-why-is-it-celebrated-5-facts-about-dr-b-r-ambedkar-1638766073-1