Some facts you should know about the Indian flag:

The Indian national flag was hoisted on Mount Everest on May 29, 1953, along with the Union Jack and the Nepalese National flag
Bhikaji Rustom Cama was the first Indian who raised the flag on foreign soil
The flag of India consists of three equal-sized horizontal stripes
The Indian flag was adopted on July 22, 1947, just before India received independence from Britain on August 15, 1947
The middle stripe at its centre bears the design of an Ashoka Chakra in navy blue colour with 24 equally spaced spokes
Saffron colour is the symbol of courage and sacrifice; white is the symbol of truth, peace and purity and green is the symbol of prosperity. The Ashoka Chakra in the middle symbolises righteousness
During the period of Indian independence, several other designs of Indian flag were used and adopted
The first Indian flag had religious symbols and eight roses on it with Vande Matram written in the middle. It was hoisted on August 7, 1906 at Parsi Bagan Square in Kolkata
Second Indian flag had partial modifications. It was hoisted by Bhikaji Cama in Germany
Bal Gangadhar Tilak used a different type of flag in the year 1917. The flag had the Union Jack on the top left and Crescent on top right corner. It also had seven stars
In 1921, a new flag which contained colours according to religions came into existence. This flag was designed with the Ashoka Chakra in the centre
To avoid the spiritual intrusion, a new flag came into existence. It had three colours, saffron, white and green with a chakra in the middle. It was adopted in the year 1931
Indian National Flag was designed by Pingali Venkayya who was a freedom fighter from Andhra Pradesh
His design was adopted by Indian National Congress on July 22, 1947.

Source; https://www.indiatoday.in/education-today/gk-current-affairs/story/the-indian-flag-952496-2016-07-22