When you are in Appointment Book's Daily display, you can press PG UP ((<Shift>)-(<UpArrow>)) and PG DN ((<Shift>)-(<DownArrow>)) to move to the next or previous day. If you have to go many days forwards or backwards, try this technique. Press (ESC) to enter the Calendar display.
Appointment Book Calendar View: Graphic
Use the Arrow Keys to position the cursor on the day you want. to move to the day you want and press (ENTER) to switch back to the Daily display.