struct ddate

    typedef struct ddate {
              int dyear;          /* Year - 1900 */
              int dday;           /* Day of month (1-31) */
              months dmon;        /* Month (Jan = 0) */
         };

    #include <datehk.h>

    Note: the year is stored as Year - 1900. For example, if you
         wanted to store 1987 in the variable d (of type struct
         ddate), you would:       d.dyear = 87;

    Note: the months start with January as zero.