History of Constitution - What is the importance?

Found independence on August 15, 1947. On 26th November 1949, the Indian Constitution became ready. This day is celebrated as Constitution Day. Indian Constitution came into effect on January 26, 1950. The history of this decision is that the last Sunday of January in the 1930s was on 26, from January 17 to January 1947, January was celebrated as 'Independence Day'. Now the independence has been received on August 15. What is the significance of January 26, celebrated over a decade and a half? To maintain the importance of this day, the decision of the Indian Constitution to be implemented from January 26, 1950.
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