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HP -27S Owner's Manual page 138

Scientific

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Tifii€r Appointmentsl
and
Date Arithmetic
The calculator contains
a clock and
calenda{,
which
are
used
by
the
TIME application.
You can select
a l2-hour or
24-hour clock, and
an
American
(month/
day
/year) or
European (day.month.year)
calendar
format. You can
also:
I
Store appointments
that
set alarms
with
optional
messages.
I
Determine
the duy of the
week
for a
particular
date.
t
Calculate
the number of
days between
two
dates,
using the
360-
duy,
the
365-day,
or
the actual
calendar.
Viewing
the
Time
and
To
view the
d"y of
the week,
date,
the TIME
application.
Date
and time,
press
I[
rrrrrelto
enter
Current date and
time
A(AM)
or
P(PM);
disptayed
in
12-hour
format
only
If
you overwrite the time and date, you
can restore
them
to the
dis-
play
by
pressing
[ffi-].
iffiffiffi'm
r
36
7=
Time, Appointments, and Date Arithmetic

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