HP HP-18C - Setting the Time and Date

Table 8-1 describes the TIME menu keys.
Table 8·1. TIME Menu Keys
Menu Key Description
B1DI
Displays the CALC menu, which is used to calculate the num-
ber of days between two dates or the date a specified
number
of days before or after a given date; also used to
determine the day
of the week for any date .
...
Displays the APPT menu, used to set and view appointment
alarms.
tmII'iI
Displays the ADJST menu for adjusting the clock setting .
...
Displays the SET menu for setting the time and date; also
selects the
time and date formats.
Setting the Time and Date
Th e SET menu is used to set the time and date and to change the time
and date format s. Table 8-2 describes the SET menu .
To set
the time , from the MAIN menu :
1. Press I11III, then .. to displa y the SET menu . Note the cur-
rent tim e fo rmat-ml or P~ l after the time indicates 12-hour
format .
2. Using the current format , key in the correct time* as a number in
the form HH .MMSS. For example 9:08:30 PM would be key ed in
as 9.0830 (12-hour format) or 21.0830 (24-hour format) .
3. Press I11III. The clock is now set to the new time .
4. For 12-hour format only: If necessary , press IiIi1II to switch be-
tween AM and PM .
• To set th e exact time from a time sta nd ard, key in an HH .MMSS value 15 to 30 seco nd s in
the future.
Pr ess IIIiIII when the two times match.
116 8: Time, Alarms, and Date Arithmetic