You may have noticed that 2012 is a leap year. And that means that this year we get an extra day on February 29th. So why do we go to all the trouble to have a leap year?

Epipheo shows you how, based on astronomy, the Gregorian Calendar uses leap year to keep us in tune with the sun, the stars and the universe.

And why not check out Feb29th.Net to see how the Blogging the Leap Year project is getting on!