Adding a leap day every four years would make the calendar ... stepped in to declare what date was used by leaplings for such things as drivers licenses, whether Feb. 28 or March 1.

Leap day means several different things to Alexander ... for a solstice or the longest day of the year — to know when to do things like plant and harvest. Over time, she says, the need grew ...

It's a leap year, and today — Thursday, Feb. 29 — is Leap Day. The calendar oddity means this year is actually 366 days long, instead of the regular 365. Here's why leap years occur.

NEW YORK — Leap year. It’s a delight for the calendar and math nerds among us. So how did it all begin and why? Related: Where to celebrate Leap Year Day on ... for such things as drivers ...