<Tr> <Th> Proportion </Th> <Td> 2: 3 </Td> </Tr> <Tr> <Th> Adopted </Th> <Td> 22 July 1947; 70 years ago (1947 - 07 - 22) </Td> </Tr> <Tr> <Th> Design </Th> <Td> A horizontal triband of India saffron, white, and India green; charged with a navy blue wheel with 24 spokes in the centre </Td> </Tr> <Tr> <Th> Designed by </Th> <Td> Pingali Venkayya </Td> </Tr>

Trace the origin of the indian national flag