Transform an Excel serial date to year, month and day
[C++]
int XlSerialToDate(
   double date,
   int* yy,
   int* mm,
   int* dd
);
A serial date value as used by Excel.
Pointer to variable which will contain year (eg 1996).
Pointer to variable which will contain month (1-12).
Pointer to variable which will contain day of month (1-31).
1 if the function succeeds; 0 if it fails
This function calls Excel's YEAR(), MONTH() and DAY() functions
			to transform a serial date into its components. Because it uses Excel for the transformation, it handles variations in 
			the Excel base date transparently.
Header: xlldate.h