Happy Leap Year!!!
Leap years - any year which can be evenly divided by 4 (2008, 2012, 2016), unless the year can also be divided by 100 (2100, 2200), though years which can be evenly divided by 400 STILL are leap years (2000, 2400). Clear?
I didn't realize we skipped a leap year EVER, but every hundred years we do. It's all a math formula based on the amount of time it takes for earth to rotate around the sun.
Want to learn more? This video should do the trick...
Alternatively, if you'd rather just think about how much fun it is to get an extra day in 2016, perhaps you'd rather watch a bunch of great bike riders making "leaps" over things.
Enjoy your extra day!