HP 17bII+ - Manual (Page 151)

11: Time, Appointments, and Date Arithmetic 151
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
2. Key in the second date and press  .
3. Press  ,  , or  to calculate the number of days
using that calendar.
Example: Calculating the Number of Days between Two Dates. Find
the number of days between April 20, 2003 and August 2, 2040, using
both the actual calendar and the 365-day calendar. Assume the date
format is month/day/year.
Keys: Display: Description:
   Displays CALC menu.
4.202003



 
Stores Apr. 20, 2003
as first date and
displays its day of the
week.
8.022040



 
Stores Aug. 2, 2040 as
second date.
  

Calculates actual
number of intervening
days.
   Calculates number of
intervening days by a
365-day calendar.
Calculating Past or Future Dates
To calculate a date a specified number of days from another date:
1. Key in the known date (for today’s date, use
 ) and press
 .
2. Key in the number of days. This number should be negative if the
unknown date precedes the known date. Press  .