New Delhi, Aug 15 (ANI): Union Defence Minister Rajnath Singh hoisted tricolour in the national capital on August 15. The event took place at his residence. He unfurled the national flag on the occasion of Independence Day. The nation is celebrating its 73rd Independence Day on August 15. A horizontal rectangular tricolour of saffron, white and green with the Ashoka Chakra at its centre, the Indian flag is described in the constitution as a symbol of hopes and aspirations of the people of India.