I love this app.
“OneNote Calendar, a handy application that takes your OneNote data and displays it in a calendar format. Your OneNote notes are displayed in the order of the last date they were modified. Not only is this a handy way to view your notes, it is also an excellent graphic representation of how busy you might have been on a given day or during a particular period of time. This is an excellent addition to any OneNote users toolbox. Especially if you’re like me and you forgot where you might have filed away a specific note.”
Josh Einstein - you rock, sir!