To solve this question we have to make deduct these 2 years. 2120 minus 1963 will give the answer.
You are 157 years old.
(1884 months are passed.)
From 1963 to 2120 there are 157 years. If you want to learn your age in 2120 (born in 1963) your age is 157.
Let's see what will be your age if you born +1 or -1 from that date.