2013-70=1943
If you have turned or are turning 70 years old in 2013, then you were born in 1943.
Whatever year you were born in
If you were born in March 1939 you would have turned 70 in 2009.
1987 + 70 = 2057.
1950
You were born in 1947 if you have had your birthday in 2017, or else 1946.
Buster Keaton was born: October 4, 1895. He died on February 1, 1966 at the age of 70. He would have turned 100 in 1995, 110 in 2005, and 120 in 2015.
Well, honey, if you're 70 years old, you must have been born in 1952. Simple math, darling. Just subtract 70 from the current year and there you have it. Now go celebrate that wisdom and experience of yours!
1946
Calculated in 2010 the year of birth was 1940.
Stop being lazy and subtract 70 from 2012
Around 70 million years ago.