Why+was+August+15+chosen+as+Independence+Day%3F%3Cbr+%2F%3E%0D%0AIn+1929%2C+when+Jawaharlal+Nehru+as+Congress+President+gave+the+call+for+%E2%80%98Poorna+Swaraj%E2%80%99+or+total+independence+from+British+colonial+rule%2C+January+26+was+chosen+as+the+Independence+Day.+In+fact%2C+Congress+party+continued+to+celebrate+it+1930+on+wards%2C+till+India+attained+independence+and+January+26%2C+1950+was+chosen+as+the+Republic+Day+%E2%80%93+the+day+India+formally+became+a+sovereign+country+and+was+no+longer+a+British+Dominion.%3Cbr+%2F%3E%0D%0ASo+how+did+August+15+become+India%E2%80%99s+independence+day%3F+Well%2C+Lord+Mountbatten+had+been+given+a+mandate+by+the+British+parliament+to+transfer+the+power+by+June+30%2C+1948.+If+he+had+waited+till+June+1948%2C+in+C+Rajagopalachari%E2%80%99s+memorable+words%2C+there+would+have+been+no+power+left+to+transfer.+Mountbatten+thus+advanced+the+date+to+August+1947.