struct tm xtm; localtime_r(&xt,&xtm);
cp += sprintf(cp,"%02d:%02d",xtm.tm_hour, xtm.tm_min);
if( !xtm.tm_hour && !xtm.tm_min ) {
struct tm xtm; localtime_r(&xt,&xtm);
cp += sprintf(cp,"%02d:%02d",xtm.tm_hour, xtm.tm_min);
if( !xtm.tm_hour && !xtm.tm_min ) {