Mystery solved.

Last winter, I noticed as I walked by our local public grammar school that they had posted the school's schedule for "Febuary" on both sides of the sign in front of it. This, of course, does nothing for the confidence of the community in the quality of the education being offered therein. Unless, of course, a second-grader is in charge of the sign. But even then, one would expect a teacher to proofread the thing.

Today I notices the schedule for "Septemberr."

Now I know where the "r" went.