C 关于时间戳与时间的转化？

时间戳与时间的相互转化，数据不对
时间戳1384936600对应的时间是2013-11-20-8:36:40 可是输出的是2013-11-20-3-36-40
时间2013-11-20-8:36:40对应的时间戳是1384936600，可是输出的是1384951000
不知道错在哪里

//时间转化成时间戳
long timeChange(stTIME_INFO* data){

time_t timep; struct tm p; p.tm_year=2013-1900; p.tm_mon=11-1; p.tm_mday=20; p.tm_hour=8; p.tm_min=36; p.tm_sec=40; /*p.tm_year=data->tm_year-1900; p.tm_mon=data->tm_mon-1; p.tm_mday=data->tm_mday; p.tm_hour=data->tm_hour; p.tm_min=data->tm_min; p.tm_sec=data->tm_sec;*/ timep=mktime(&p); printf("time%d",timep); return timep;

}
//时间戳转化成时间
int stampChange(time_t timep,stTIME_INFO* data){

struct tm *p; timep=1384936600; printf("pppppstamp:%d",timep); p=localtime(&timep);data->tm_year =p->tm_year+1900; data->tm_mon =1+p->tm_mon; data->tm_mday = p->tm_mday; data->tm_hour =p->tm_hour; data->tm_min =p->tm_min; data-优艾设计网_PS交流>tm_sec =p->tm_sec; data->tm_msec = 0; printf("%d-%d-%d-%d-%d-%d",data->tm_year,data->tm_mon,data->tm_mday,data->tm_hour,data->tm_min,data->tm_sec); timeChange(data); return 0;

}