We are approaching the end of February, the month that has 28 days.... 75% of the time! Around 2,000 years ago, Julius Caesar realized that our calendar didn't quite match the time it takes to revolve around the sun. You see, it takes about 365 1/4 days for the Earth to make a full trip around the sun. Our calendar is only 365 days long, so once every four years we must add an extra day to our calendar year to make up for the extra time it takes for our revolution around the sun.
So what about those people who are born on a leap year? Well, technically they only have a birthday every four years! Imagine that! Actually, people who are born on a leap year will celebrate their birthday either on the 28th of February or the 1st of March.
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