#include <LiquidCrystal.h>
LiquidCrystal lcd(8,9,4,5,6,7);
int hours=0,minutes=0,seconds=0;
String am_pm=" AM";
void setup() {
  lcd.begin(16,2);
}

void loop() {
  lcd.setCursor(5,0);
  lcd.print("CLOCK");
  lcd.setCursor(3,1);
  if(seconds==59 && minutes!=59){
    minutes++;
    seconds=0;
  }
  if(minutes==59 && seconds==59 && hours!=23){
    hours++;
    minutes=0;
    seconds=0;
  }
  if(hours==12 && minutes==0 && seconds==0){
    am_pm=" PM";
  }
  if(hours==23 && minutes==59 && seconds==59){
    hours=0;
    minutes=0;
    seconds=0;
    am_pm=" AM";
  }
  String s1=(String)hours;
  String s2=(String)minutes;
  String s3=(String)seconds;
  String s="";
  if(s1.length()==1){
    s+="0"+s1;
  }
  else if(s1.length()==2){
    s+=s1;
  }
  s+=":";
  if(s2.length()==1){
    s+="0"+s2;
  }
  else if(s2.length()==2){
    s+=s2;
  }
  s+=":";
  if(s3.length()==1){
    s+="0"+s3;
  }
  else if(s3.length()==2){
    s+=s3;
  }
  lcd.print(s+am_pm);
  seconds++;
  delay(1000);
}