40 Section 2: Percentage and Calendar FunctionsNumber of Days Between Dates

To calculate the number of days between two given dates:

1.Key in the earlier date and press \.

2.Key in the later date and press .

The answer shown in the display is the actual number of days between the two dates, including leap days (the extra days occurring in leap years), if any. In addition, the hp 12c platinum also calculates the number of days between the two dates on the basis of a 30-day month. This answer is held inside the calculator; to display it, press ~. Pressing ~ again will return the original answer to the display.

Example: Simple interest calculations can be done using either the actual number of days or the number of days counted on the basis of a 30-day month. What would be the number of days counted each way, to be used in calculating the simple interest accruing from June 3, 2004 to October 14, 2005? Assume that you normally express dates in the month-day-year format.

Keystrokes

Display

 

11.09

Sets date format to month-day-year.

 

 

(Display shown assumes date

 

 

remains from preceding example.)

6.032004\

6.03

Keys in the earlier date and

 

 

separates it from the later date.

10.142005

498.00

Keys in the later date. Display shows

 

 

actual number of days.

~

491.00

Number of days counted on the

 

 

basis of a 30-day month.

File name: hp 12c pt_user's guide_English_HDPMF123E27

Page: 40 of 275

Printed Date: 2005/8/1

Dimension: 14.8 cm x 21 cm