MONSPERYEAR
if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
static const int mon_lengths[2][MONSPERYEAR] = {
strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
y += yourtm.tm_mon / MONSPERYEAR;
yourtm.tm_mon %= MONSPERYEAR;
yourtm.tm_mon += MONSPERYEAR;
if (++yourtm.tm_mon >= MONSPERYEAR) {
t->tm_mon >= MONSPERYEAR) ?
t->tm_mon >= MONSPERYEAR) ?
static const int len_months[2][MONSPERYEAR] = {