To solve this question we have to make deduct these 2 years. 2120 minus 1979 will give the answer.
You are 141 years old.
(1692 months are passed.)
From 1979 to 2120 there are 141 years. If you want to learn your age in 2120 (born in 1979) your age is 141.
Let's see what will be your age if you born +1 or -1 from that date.