Identify the national festival on the basis of the given clues:
i) India attained freedom on this day.
ii) The Prime Minister gives a speech at the Red Fort in Delhi.

India attained freedom from British colonial rule on 15 August 1947. This day is celebrated nationwide as Independence Day. On this national festival, the Prime Minister of India unfurls the national flag and delivers a customary address to the nation from the ramparts of the historic Red Fort in Old Delhi.