FROM THE LATIN
'(<a href="http://www.j-archive.com/media/2006-01-19_DJ_19.jpg" target="_blank">Kelly of the Clue Crew shows a piece of paper and an image on a monitor.</a>)  From the Latin for continuous, a calendar with all 14 possible years is called this type; <a href="http://www.j-archive.com/media/2006-01-19_DJ_19a.jpg" target="_blank">2006 is No. 1</a>, so my birthday falls on a Thursday'
a perpetual calendar