Owner's Manual

Variable Default Variable Default
DT1
12-31-1990
DBD
0
DT2
12-31-1990
Day-count
method
ACT
• To clear Date worksheet variables and reset default values without
affecting the day-count method, press & z while in the Date
worksheet.
Entering Dates
• The calculator assumes that
DT1 is earlier than DT2.
• Enter dates for DT1 and DT2 in the selected US or European date format.
• When you compute a date for DT1 or DT2, the calculator displays a three-
letter abbreviation for the day of the week (for example, WED).
Selecting the Day-Count Method Affects Calculations
• When you select
ACT as the day-count method, the calculator uses the
actual number of days in each month and each year, including
adjustments for leap years.
• When you select 360 as the day-count method, the calculator assumes 30
days per month (360 days per year). You can compute DBD using this day-
count method, but not DT1 or DT2.
Computing Dates
1. To select the Date worksheet, press & u. The
DT1 value is displayed.
2. To clear the worksheet, press & z.
3. Enter values for two of the three variables: DT1, DT2, and DBD.
Note: Do not enter a value for the variable you wish to solve for.
4. To enter a value for a variable, press # or " to display the variable.
5. Key in a value and press !.
6. To change the day-count method setting, press # until ACT or 360 is
displayed, and then press & V to select the other day-count method.
7. To compute a value for the unknown variable, press # or " to display the
variable, and then press C. The calculator displays the computed value.
Other Worksheets 75