F_ISDOW
if ((flags & (F_ISDAY|F_ISDOW)) || v1 > 12) {
if (flags & F_WILDMONTH && flags & F_ISDOW && day == tp->tm_wday + 1)
if (flags & F_ISMONTH && flags & F_ISDOW && month == tp->tm_mon + 1 &&
if (flags & F_ISDOW)
*flags |= F_ISDOW;