days_pmonth
daysmon = days_pmonth(tm.tm_mon, tm.tm_year);
dpm = days_pmonth(ptime->tm.tm_mon, ptime->tm.tm_year);
if (days_pmonth(1, nextmatch.tm.tm_year) < 29)
moredays = days_pmonth(ptime->tm.tm_mon + 1,
moredays = days_pmonth(0, ptime->tm.tm_year + 1);
moredays = days_pmonth(ptime->tm.tm_mon, ptime->tm.tm_year);
tdpm = days_pmonth(tmon, tyear);
static int days_pmonth(int month, int year);