Question

when was our constitution completed and why was it started on 26th January 1950 ?

Answer 1

The Constituent Assembly completed the Constitution on 26 November, 1949.

But it was imposed on 26 January, 1950 to give due importance to the date, 26th January.

To mark this day we celebrate it as the Republic Day every year.
*Jawaharlal Nehru declared Independence Day of India on 26th January, 1931.

Answer 2

Our constitution was implemented on 26 november 1949.

26 January is chosen as the republic day because it was on this day in 1930 when declaration of purna swaraj was proclaimed by the Indian national congress as opposed to the dominion status offered by British empire. The constitution was adopted by the Indian constituent Assembly on 26 November 1949, and came into affect on 26 January 1950 with a democratic government system, completing the country's transition towards becoming an independent republic.

Hope this answer will help you...