To solve this question we have to make deduct these 2 years. 2078 minus 1958 will give the answer.
You are 120 years old.
(1440 months are passed.)
From 1958 to 2078 there are 120 years. If you want to learn your age in 2078 (born in 1958) your age is 120.
Let's see what will be your age if you born +1 or -1 from that date.