It's a special day at Park Visalia Assisted Living & Memory Care. One of the residents, Helen Davidson, turns 100 on a day that only comes once every four years.
Did you know only one in 1,461 people (0.07% of the population) has a leap day birthday?
Leap years exist because it takes the Earth 365 days, five hours, 48 minutes and 45 seconds to orbit the sun -- almost an extra quarter of a day per year.
A pair of newborn twins will have birthdays years apart even though they were born only minutes apart.
