Why a Leap Year?
In 2016 we add February 29 to the calendar. Leap years, which debuted in the Gregorian calendar in the 16th Century, occur every four...
See List & Archive for list of 50 recent blog posts and an archive of blog posts since 2012 when this website was rebuilt.
Screen grabs from previous version of this website (28 April 2011 to 16 December 2014).