9 Calendar Formats and Date Calculations

Calendar Format

The calendar options for bonds and date calculations are Actual (ACT) and 360. Press

]Åto toggle between these options. The default setting, Actual, is based on a 365-

day calendar. The alternate setting, 360, is based on a 360-day calendar. It is important to note date and bond calculations return different values for each of these settings, so verify the calendar mode is appropriate for your problem before you begin.

Table 9-1 Date and Calendar Keys

Keys

Description

 

 

]È

Enters dates in DD.MMYYYY or MM.DDYYYY formats. D.MY is the default.

 

Numbers at the far right of a calculated date indicate days of the week. 1

 

is for Monday; 7 is for Sunday.

]Å Toggles between 360-and 365-day (Actual) calendars.

\Ç Calculates the date and day, past or future, that is a given number of days from a given date. Note the returned result is always calculated on the 365-day calendar (Actual), regardless of the calendar setting.

\Ä Calculates the number of days between two dates. Based on your current setting, returned result is calculated on either the 365-day (Actual) or the 360-day calendar.

Date Format

The valid range of dates for the calendar functions of the HP 10bII+ is October 15, 1582 through December 31, 9999. For the date, the number of days between two dates, and bond calculations, dates may be entered and displayed either in month-day-year (M.DY) or day- month-year (D.MY) formats. In addition to a different display mode for the date and date calculations, these functions also return different values based on the 365-day (ACT) and 360- day (360) calendars.

Press ]Èto toggle between the formats. The default setting is day-month-year (dd.mmyyyy).

Press ]Åto toggle between the 360-and 365-day (actual) calendars.

To specify the number of displayed decimal places:

1.Press \5.

Calendar Formats and Date Calculations 99