Open multiple files on SD Card using FatFs

Question

The code is to log data in multiple files on SD card. The problem is that the SD card only opens and saves 1 file. When the if condition occurs in the 2nd time, the old file is deleted and the SD card is empty.

The condition here is that if a is between 110000 && 95000, time should be logged into the SD Card.

code:

char hours[5];
char seconds[2];
char min[2];
char year[4];
char month[2];
char day[2];

sprintf(hours, "%d" , sTime.Hours);
sprintf(day, "%d", sDate.WeekDay);
sprintf(seconds, "%d", sTime.Seconds);
sprintf(min, "%d", sTime.Minutes);
sprintf(year, "%d", sDate.Year);
sprintf(month, "%d", sDate.Month);

   /* Mount SD Card */
   if(f_mount(&fs, "", 0) != FR_OK)
      Error_Handler();  

   /* Open file to write */
   if(a <=110000 && a>=95000) {
      if(f_open(&fil,"second.txt", FA_CREATE_NEW | FA_READ | FA_WRITE) != FR_OK)
         Error_Handler();  
   }

   /* Check free space */
   if(f_getfree("", &fre_clust, &pfs) != FR_OK)
      Error_Handler();  

   total = (uint32_t)((pfs->n_fatent - 2) * pfs->csize * 0.5);
   free1 = (uint32_t)(fre_clust * pfs->csize * 0.5);   

   /* Free space is less than 1kb */
   if(free1 < 1)
      Error_Handler();  

   /* Writing text */
   f_puts(hours, &fil);  
   f_puts(min, &fil);
   f_puts(seconds, &fil);
   f_puts("\n", &fil);
   f_puts(year, &fil);
   f_puts(month, &fil);
   f_puts(day, &fil);

   /* Close file */
   if(f_close(&fil) != FR_OK)
      Error_Handler();  

   /* Open file to read */
   if(f_open(&fil, "second.txt", FA_READ) != FR_OK)
      Error_Handler();  

   while(f_gets(buffer, sizeof(buffer), &fil))
   {
     //printf("%s", buffer);
   }

  /* Close file */
   if(f_close(&fil) != FR_OK)
      Error_Handler();  

   /* Unmount SDCARD */
   if(f_mount(NULL, "", 1) != FR_OK)
      Error_Handler();