(dates of birth)
Your ~ is the exact date on which you were born, including the year.
The registration form showed his ~ as August 2, 1979.
N-COUNT: oft poss N
DATE OF BIRTH
Meaning of DATE OF BIRTH in English
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012