Returns the day of the month for a date
[C++]
static int Day(
   double& dday,
   long serial_number
);
static int Day(
   long& lday,
   long serial_number
);
static int Day(
   short int& shday,
   long serial_number
);
A reference to a value that will contain a day number (between 1 and 31) if the function succeeds.
An Excel serial date value.
A reference to a value that will contain a day number (between 1 and 31) if the function succeeds.
A reference to a value that will contain a day number (between 1 and 31) if the function succeeds.
Zero if the function has been called successfully; non-zero
            if the function could not be called.
            See Error codes for a list
            of return values.
See the Microsoft Excel on-line Help for full details about
            this function.
Header: xlfuncs.h