Wrong TimeStamps

[Praneethsvch]

When used this block of code which was used to develop the library, wrong timestamps are observed:

void setup_featherWing(void) {

  //RTC init
//  if (! rtc.begin()) {
//    Serial.println("Couldn't find RTC");
//    Serial.flush();
//    abort();
//  }

  if (! rtc.initialized() || rtc.lostPower()) {
    Serial.println("RTC is NOT initialized, let's set the time!");
    // When time needs to be set on a new device, or after a power loss, the
    // following line sets the RTC to the date & time this sketch was compiled
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
    // This line sets the RTC with an explicit date & time, for example to set
    // January 21, 2014 at 3am you would call:
    // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));
    //
    // Note: allow 2 seconds after inserting battery or applying external power
    // without battery before calling adjust(). This gives the PCF8523's
    // crystal oscillator time to stabilize. If you call adjust() very quickly
    // after the RTC is powered, lostPower() may still return true.
  }

  // When time needs to be re-set on a previously configured device, the
  // following line sets the RTC to the date & time this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  // This line sets the RTC with an explicit date & time, for example to set
  // January 21, 2014 at 3am you would call:
  // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0));

}

String get_timestamp(void){
  DateTime now = rtc.now();
  String custom_timestamp_calibrated = String(now.year(), DEC) + String('-') + String(now.month(), DEC)+ String('-') + String(now.day(), DEC)+ String(' ') + String(now.hour(), DEC)+ String(':') + String(now.minute(), DEC) + String(':') + String(now.second(), DEC);
  return custom_timestamp_calibrated;
}

void writeToSDCard(String StringtobeWritten) {
  //add time stamp to every sd card write
  String timestamp = get_timestamp();
  StringtobeWritten = timestamp + String(',') +StringtobeWritten ;
  char buffchar[StringtobeWritten.length() + 1];
  StringtobeWritten.toCharArray(buffchar, StringtobeWritten.length() + 1);
  digitalWrite(8, HIGH);
  if (!sd.begin(chipSelect, SPI_HALF_SPEED)) {
    // set the SD_ERROR flag high;
    SD_ERROR = 1;
    Serial.println("SD Initialization Failed.");
  }
  else
  {
    ofstream sdout(name, ios::out | ios::app);
    if (!sdout)
    {
      Serial.println("SD Card Open Failed.");
      SD_ERROR = 1;
    }
    else {
      sdout << buffchar << endl;
      // close the stream
      sdout.close();
      SD_ERROR = 0;
    }
  }
  digitalWrite(8, LOW);
}

[Praneethsvch]

same issue found here but unresolved: https://forums.adafruit.com/viewtopic.php?f=31&t=134309&p=666320#p666320