Republic Day honors the date on which the Constitution of India came into force on 26 January 1950 replacing the Government of India Act (1935) as the governing document of India.
The Constitution was adopted by the Indian Constituent Assembly on 26 November 1949, and came into effect on 26 January 1950 with a democratic government system, completing the country's transition towards becoming an independent republic.
Delhi Republic Day Parade is held in the capital, New Delhi. Commencing from the gates of the Rashtrapati Bhavan (the President's residence), Raisina Hill on Rajpath past the India Gate, this event is the main attraction of India's Republic Day Celebrations lasting 3 days. The parade showcases India's Defence Capability, Cultural and Social Heritage.
Courtesy: Wikipedia