When is the next leap year? Here are some fascinating leap year facts, along with all the details about why leap day always falls on Feb. 29.

So adding a whole day every four years was actually a little more correction than was needed. In 1582, Pope Gregory XIII signed an order that made a small adjustment. There would still be a leap ...

Why does Leap Year occur once every 4 years ... summer and winter solstice would no longer align with the seasons. "If there were no leap years, the seasons would completely swap every 750 ...

Why not celebrate it every four years? It's because the earth ... It's too bad there are no traditions associated with Leap Day," writer Luke Del Tredici recounted in "The 30 Rock Book: Inside ...