int Sec = 0;
int Min = 0;
int Hrs = 0;
bool PM = 0;

void setup() {
  Serial.begin(9600);
}

void loop() {
  delay (1000);  //Runs the loop every 1 second
  Sec ++;
  if (Sec==59)  //On the 59th loop/sec increment minute and reset seconds
  {
    Min ++;
    Sec==0;
  }
}