F_DAYOFMONTH
di->flags |= (F_MONTH | F_DAYOFMONTH);
di->flags |= (F_ALLMONTH | F_DAYOFMONTH);
di->flags |= F_DAYOFMONTH;
if ((di->flags & F_DAYOFMONTH) != 0)
if ((di.flags & ~F_VARIABLE) == (F_YEAR | F_MONTH | F_DAYOFMONTH) &&
if ((di.flags & ~F_VARIABLE) == (F_MONTH | F_DAYOFMONTH) &&
if (di.flags == (F_ALLMONTH | F_DAYOFMONTH) &&