HP 20B User Manual page 50

Table 6-1 Date Calculation Example
Key
<10.3
12010
I
<=
To reset the menu items to their default values, with any item of the Date menu displayed press
I
displayed, press
Display
O
to reset the menu, or
Description
Inputs the ending date in the selected format.
Calculates the number of actual days between the
starting and ending dates.
O
to cancel. Press again to exit the menu.
50
Date Calculation
:x
. With Date