Panasonic GD87 - Manual (Page 39)

Setting a Power On/Off Time
The phone can be set to turn itself on or off automatically at a
specified time using the Power On/Off feature. Setting/adjusting
the Power On/Off automatically is similar to setting the time on
the clock. Select Power On Time or Power Off Time in the
Clock Function menu.
From Idle mode:
Caution: Ensure that the setting of the Alarm or Power On
function will not automatically power on when in an aircraft or
medical facility etc. - see ‘Important Information’.
Calculator
The four function calculator will enable the user to perform
simple arithmetic calculations (addition / subtraction /
multiplication and division).
From Idle mode:
For arithmetic operations:
Applications
41
Applications
Applications > Clock Function > Power On
Time or Power Off Time
Enter time (use 24
hour clock)
Applications >
Calculator
Enter number
(max. 10 digits)
Select arithmetic
operation
Complete a further
sum?
No
Yes
Enter number
(max. 10 digits)
Press to
complete
the sum
Press and hold to add a decimal
point
To
multiply
To
add
To
divide
To
subtract
Select next
arithmetic
operation
Intermediate
sum result
shown
Select
Frequency