1int __month_to_secs(int month, int is_leap)
 2{
 3	static const int secs_through_month[] = {
 4		0, 31*86400, 59*86400, 90*86400,
 5		120*86400, 151*86400, 181*86400, 212*86400,
 6		243*86400, 273*86400, 304*86400, 334*86400 };
 7	int t = secs_through_month[month];
 8	if (is_leap && month >= 2) t+=86400;
 9	return t;
10}