To solve this question we have to make deduct these 2 years. 2086 minus 1977 will give the answer.
You are 109 years old.
(1308 months are passed.)
From 1977 to 2086 there are 109 years. If you want to learn your age in 2086 (born in 1977) your age is 109.
Let's see what will be your age if you born +1 or -1 from that date.