Michelle Birnbaum, New Jersey Mother, Has Child Born On Leap Day

02/29/2012 08:19 am ET | Updated Apr 30, 2012

SADDLE RIVER, N.J. -- A New Jersey mother born on February 29 beat 2 million-to-1 odds when she had her daughter – who was also born on leap day.

Birnbaum turns 32 Wednesday, but will celebrate for only the eighth time on the actual date. It comes once every four years as the result of a system intended to keep the seasons, years, months and days in working order.

Birnbaum went into labor on Feb. 28, 2008, but Rose was born the following day.

She tells the newspaper she's delighted to have a "built in party partner."