Our calendar does not measure the earth's rotation around the sun with perfect accuracy. Leap years account for slight differences by adding a 366th day to our year. This is what leap years look like across eight different cultures.
How Leap Year is calculated on calendars around the world
To read the full article, please sign up or login.
Get full access to the Columbia Missourian on your computer, phone, and tablet for just $5.95 per month.
* All the high-quality, in-depth journalism of the Columbia Missourian and Vox Magazine, updated 24/7
* Your news. Your device. Your time.
If you'd like to read more about the value of being a member, read this column from the Missourian's executive editor, Tom Warhover.