Explanation:

• Constitution day which is also known as the Samvidhan Divas is celebrated every year on November 26 to mark the day on which the Constitution of India was adopted. While the adoption of the Constitution took place on November 26, 1949, it came into effect on January 26, 1950.
• The draft of the constitution was prepared by the drafting committee under BR Ambedkar’s aegis. According to the government notification, the Constitution Day was also a tribute to Ambedkar.
• Earlier, this day was commemorated as National Law Day, after a resolution by the Supreme Court Bar Association, a lawyers’ body, in 1979.
• Jammu and Kashmir celebrated it for the first time since the abrogation of Article 370.