"%02d/%02d/%02d %02d:%02d:%02d, +%s\n",
dtm.tm_year+1900, dtm.tm_mon+1, dtm.tm_mday,
dtm.tm_hour, dtm.tm_min, dtm.tm_sec, duration);
"%02d/%02d/%02d %02d:%02d:%02d, +%s\n",
dtm.tm_year+1900, dtm.tm_mon+1, dtm.tm_mday,
dtm.tm_hour, dtm.tm_min, dtm.tm_sec, duration);