Thread:BEJT/@comment-30295800-20181012165709/@comment-26838855-20181012172612

The dates given are the only accurate dates. All we know for certain is that she was born between January 2, 1979 and December 31, 1980. Because we just know she was "7" in "1987".

So, at the earliest, it was January 1, 1987 and she was 1 day from turning 8. Therefore meaning she turns 8 on January 2, 1987, making her born January 2, 1979.

At the latest, it was December 31, 1987, and it was her 7th birthday. Therefore making her born December 31, 1980.

So, all we know for certain is that she was born between January 2, 1979 and December 31, 1980.

We do not know that she was born in 1980, as you have edited it to say.