Pandit Jawaharlal Nehru presented the National Flag of India to the Constituent Assembly of India on July 22, 1947. Our National Flag is rectangular in shape and is made from cotton, khadi, wool or silk cloth. The ratio of the width of the flag to its length is always 2:3. The National Flag has three equal horizontal stripes of different colours. There is saffron (kesari) at the top, white in the middle and green at the bottom. This is why it is also called the tricolour.
The colours of the tricolour have special meanings. The saffron stands for courage and sacrifice. The white stands for truth and peace. The green stands for prosperity. In the centre of the white stripe is a navy-blue wheel which represents the chakra. It symbolises progress. Its design has been taken from the Sarnath Lion Capital of Ashoka. It is also called the Ashoka Chakra. Its diameter is equal to the width of the white stripe and it has twenty-four spokes. The National Flag signifies the unity of the country and should always be respected and honoured. We must stand in attention when it is being hoisted or lowered.