July 21 1947 - The National Flag Is Adopted by the Constituent Assembly

The National Flag of India is a horizontal rectangular tricolour of deep saffron, white and India green; with the Ashoka Chakra, a 24-spoke wheel, in navy blue at its centre. It was adopted in its present form during a meeting of the Constituent Assembly held on 22 July 1947, when it became the official flag of the Dominion of India. The flag was subsequently retained as that of the Republic of India. In India, the term "tricolour"  almost always refers to the Indian national flag. The flag is based on the Swaraj flag, a flag of the Indian National Congress designed by Pingali Venkayya.

    The flag, by law, is to be made of khadi, a special type of hand-spun cloth, or silk made popular by Mahatma Gandhi. The manufacturing process and specifications for the flag are laid out by the Bureau of Indian Standards. The right to manufacture the flag is held by the Khadi Development and Village Industries Commission, who allocate it to the regional groups. As of 2009, the Karnataka Khadi Gramodyoga Samyukta Sangha has been the sole manufacturer of the flag.

      A number of flags with varying designs were used in the period preceding the Indian Independence Movement by the rulers of different princely states; the idea of a single Indian flag was first raised by the British rulers of India after the rebellion of 1857, which resulted in the establishment of direct imperial rule. The first flag, whose design was based on western heraldic standards, were similar to the flags of other British colonies, including Canada and Australia; its blue field included the Union Flag in the upper-left quadrant and a Star of India capped by the royal crown in the middle of the right half. To address the question of how the star conveyed "Indianness", Queen Victoria created the Knight Commander of the Order of the Star of India to honour services to the empire by her Indian subjects. Subsequently, all the Indian princely states received flags with symbols based on the heraldic criteria of Europe including the right to fly defaced British red ensigns