HP 30b Professional manual The Date Calculation Menu, Date Calculation Example

8 Date Calculation

:@

Date 1

Date 2

Days

Between

Actual/

Cal.360

DWN

Figure 1 The Menu Map for the Date Calculation Menu

The Date Calculation Menu

The Date Calculation menu is used to calculate the number of days between two dates, or a second date given a number of days from an initial, or final date. To open the Date

Calculation menu, press :@. Press <or >repeatedly to scroll through the

items shown in Figure 1. Before you enter dates, verify the date is set in the format required for your problem. Date and calendar formats may be set in the Mode menu. The range of acceptable dates is October 15, 1582 to December 31, 9999. For more information on setting the preferences in the Mode Menu, see the section titled, The Mode menu: Setting Preferences in Chapter 1.

To change the value of a displayed item, key in a number or a date and press I. Once you have entered all known data, press <or >repeatedly to scroll to the unknown item and press =to calculate it.

Date Calculation Example

How many days remain in the 2010 fiscal year if today's date is June 4, 2010? Assume the fiscal year ends on October 31st, and you wish to calculate the actual number of days (Actual).

Date Calculation 57