# Compute Birthdate From Age

I have an interesting problem. I want to compute a birthdate (Month Date, Year) from a given age. I understand that subtracting the given age from the current date will supply the year of birth, but what about the month and date? Any thoughts are welcome.

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I don't think you can find birth month and day from someone saying "I'm 62 years old!" –  MITjanitor Jan 25 '13 at 21:56
This is definitely not calculus. –  Thomas Andrews Jan 25 '13 at 22:05
You can't even get year. You can only get year within 1. For example, I am the same age now whether I was born Jan 1, 1977 or Dec 31, 1976 –  Thomas Andrews Jan 25 '13 at 22:07