28/10/1975 to 11/8/1978 = 1018 Days

11/8/1978 to 19/7/1979 = 11 Months 8 Days

27/1/1968 to 28/10/1971 = 3 Years 9 Months 1 Days

28/10/1971 to 29/7/1975 = 3 Years 9 Months 1 Days