Mac 10.6.8. Outlook 14.3.9.

Today (Tues 3/11) noticed that an overdue task from yesterday said 1 day overdue and that an overdue task from Sunday said 1 days overdue. In fact, all my overdue tasks (except Monday's) are off by 1 day. Tasks for the upcoming week seem to have the right day count.

Manually backed the computer up a couple of days, no problems. Monday was a problem and it was similar to today's - perhaps somehow related to Sunday time change?

Restarted computer to no avail. Set the Mac's clock manually as well as syncing to the internet - no difference. Added a new task with a Sunday date - shows 1 days overdue, not 2.

Figured before I asked for help let me rebuild Outlook - last time was back on January 1st when I did my annual cleanup. It told me that it successfully rebuilt it but now all my tasks are in duplicate - with the date counting on the overdue tasks still messed up. Events, notes and mail did not duplicate as far as I can tell, just tasks.

Finally I went into Excel and subtracted a date in the past from the TODAY function and got the correct date count there.

Suggestions, a diagnosis of what could be wrong, anything?