The DATE_TIME structure contains a 64-bit value interpreted as an unsigned number that represents the number of 100-nanosecond intervals since January 1, 1601 (UTC).

 typedef struct _DATE_TIME {
   DWORD dwLowDateTime;
   DWORD dwHighDateTime;
 } DATE_TIME,
  *LPDATE_TIME;

dwLowDateTime: This is of type DWORD, containing the lower 32 bits of the time value.

dwHighDateTime: This is of type DWORD, containing the upper 32 bits of the time value.