Date
Arithmetic
The
CALC
menu
is
used
to
do
date
arithmetic-finding
the
number
of
days
between
two
dates,
or
determining
the
date
a
given
number
of
days
in
the
future
or
past.
Date
arithmetic
uses
one
of
three
calen-
dars-actual,
365-day,
or
360-day
(refer
to
table
8-3). You
can
also
use
the
CALC
menu
to
determine
the
day
of
the
week
for
any
date.
To
display
the
CALC
menu,
from
the
MAIN
menu,
press
IIDlII,
then
BiB·
Table
8·3.
The CALC Menu for
Date
Arithmetic
Menu
Key
Description
mIIII
Stores or calculates a date, using the current date
format-
IDIIB
month/day/year
(MM.DDYYYY)
or
day.
month. year
(DD.MMYYYY);
also displays the day of the week.
If
you
omit
YYYY,
the calculator uses the current
year.
Eil1iI
Stores or calculates the number
of
days between
DATE1
and
DATE2,
using the actual calendar. The actual calendar recog-
nizes leap years.
mmI
Calculates the number
of
days between
DATE1
and
DATE2,
using the 36D-day calendar. The 36D-day calendar
is
based
on
3D-day
months.
IEiJII
Calculates the number of days between
DATE1
and
DATE2,
using the 365-day calendar. The 365-day calendar ignores
leap years.
IIWliD
Displays the current date,
which
can then be stored
in
DATE1
or
DATE2.
Determining
the
Day
of
the
Week
For Any
Date
To
find
the
day
of
the
week
for
any
date,
key
in
the
date
and
press
mIIII
or
IDIIB·
124
8:
Time,
Alarms,
and
Date
Arithmetic
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