Time Travel Spreadsheet

I've been using, as usual, a version of the NaNoReportCard to track my noveling progress throughout November. This incarnation of the Report Card is specifically for use in Open Office, but I believe that somewhere along the way a glitch has entered the script. Today it is informing me, as my word count stands at 48563, that at this rate I will finish on November 21st.

While this is more pleasant than all the days it was telling me I wouldn't finish on time, I find it a little hard to believe...