You are either very ignorant, or purposely obtuse. Take your pick. Were there a person knows what day they were born on or not they still have a date on which they were born. You cannot get a social security number without a birth date. You cannot get a driver's license without a birth date. And most people have birth certificates. No one knows or cares about the day they were conceived. Since there is up to a 72-hour window for conception to occur, that date cannot be known.If one doesn’t know what date it was upon which one was born, one is still alive. You dope.