Date Calculation

6 Date Calculation

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. 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).

Table 6-1Date Calculation Example

Key

Display

Description

:@

Opens the Date Calculation menu. Note: 2 in the right of the display represents the day of the week. 2 represents Tuesday.

6.04

2010 I

Inputs the starting date in the selected format.

49

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HP 20B manual Date Calculation Menu, Date Calculation Example