For parents of internationally adopted children, it's very common to not know the exact birth date of your child. In Ethiopia specifically, birthdays are not culturally significant like they are here, so it is not uncommon for even non-orphans to not know their birthday.
We had to choose a birthdate for Yosef and Biniam, because the one that AAI assigned them was clearly wrong. When the boys' birth mom relinquished them in December of 2004, she put on the form that they were one month and 15 days old. So we decided to just count back from the date the form was dated, which put the boys' birthday at October 28, 2004.
We had initially hoped to give them a birthdate that was significant somehow--but had a hard time finding something, which I felt disappointed about. The other day though I resumed my quest to find something special about October 28, and lo and behold discovered that on October 28, 1886, the Statue of Liberty was dedicated in New York Harbor by President Cleveland. Pretty amazing, huh? I think October 28 is the perfect day to celebrate the birth and gift of our sons Yosef and Biniam.
(They also share a birthday with Bill Gates.)