My fathers DOB was 11-16-1933. My mother's actual DOB is 01-20-1938, but they had her in the system as 10 years younger with a DOB of 01-20-1948. She was 4 years and 2 months younger than him... but, using the incorrect date in the system (1948) she would have been 14 years and 2 months younger than him.