Office Reminders window outside visible screen area

I use my MacBook Pro sometimes as a laptop and other times connected to a cinema screen in my office.  I've found that if I popsition the Office Reminders window too far to the right when working on the large screen, if I then detach it and open the MacBook screen the Reminder window is so far to the right it is outside the visible area of the screen.  Othe items such as desktop icons don't seem to suffer from this problem, they adjust to the screen size and remain in the positions they were.  Is there some way to make the Reminders window do the same?