To solve this question we have to make deduct these 2 years. 2119 minus 1999 will give the answer.
You are 120 years old.
(1440 months are passed.)
From 1999 to 2119 there are 120 years. If you want to learn your age in 2119 (born in 1999) your age is 120.
Let's see what will be your age if you born +1 or -1 from that date.