Republic Day 2025, also known as Gantantra Diwas is on January 26. The day commemorates the adoption of the Constitution of India and the country's transition to a republic which came into effect on January 26, 1950. It must be noted that the Constitution was adopted by the Constituent Assembly of India on November 26, 1949 and came into effect on January 26, 1950. To celebrate Republic Day 2025, we bring you Happy Republic Day 2025 messages, greetings, quotes and wishes.