Originally I somehow overlooked 1 March 2009 when creating these daily posts. The tips are written in bunches, I don't sit down every morning and crunch one out.
However for some reason I originally overlooked 1 March 2009 and it brought something to mind:
Are there gaps in a series of records you are using? Besides looking for a certain name, are you paying enough attention to make certain that there are entries for every year the records supposedly cover, every region, etc.?