Help Calendar - week view for Nov 2-8

[aycrider]

The week view in my default calendar shows (2) Sundays and no Saturday in the column headers for the days of the week of November 2-8. The rest of the calendar appears to be unaffected - meaning the appointments are in the appropriate columns for the week. This duplication of Sunday does not appear for any other week. Any suggestions?

Thanks in advance,
Troy