dayofweek
if (check_dayofweek(date2, &len, &di->dayofweek)) {
check_dayofweek(p2, &len, &di->dayofweek)) {
if (check_dayofweek(p2, &len, &di->dayofweek)) {
fprintf(stderr, " dayofweek(%d)", di->dayofweek);
return (Calendar->find_days_mdow)(di.month, di.dayofweek,
return (Calendar->find_days_mdow)(-1, di.dayofweek, index,
int dayofweek;