And on February 29th, Susan Nackley-Mojave is celebrating her 12th birthday.
She might look a bit old for not even being a teenager, but that's because Susan is a leap year baby.
"Where there's a leap year, it's always more exciting because my birthday's on the calender. I see my birthday on the top print of a magazine where the date is, my birthday is on bills," said Nackley-Mojave.
To make the 29th as special as possible, Susan started a tradition of wearing a tiara on her Leap Year birthday.
"I put it next to my bed when I go to sleep the night before...When I wake up on February 29, I put the tiara on my head. My husband and children give me breakfast in bed, I wear my tiara all day long.....I wear it until I got to bed at night," she said.
In the years between, her birthday might not be on your calender, but it doesn't mean it goes unnoticed.
"The good news is that when you don't have an exact birthday on the calender, you can celebrate the whole week long!" she said.
With a birthday every four years, what good is it if you don't take advantage of the Leap Year age?
"I always try to pay the child price at a movie, but they just don't believe me for that one," she laughed.
Susan says that in the off years, she prefers to keep her birthday in the month of February.