Poultry illuminator

#define Re 4

#define LDR A0

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(Re,OUTPUT);
pinMode(LDR,INPUT);

}
void(* resetFunc) (void) = 0; //declare reset function @ address 0

void loop() {
  Serial.print("Secs: ");
  Serial.println(millis() / 1000);

 int ldr = analogRead(LDR);
 Serial.print("Strength: ");
   Serial.println(ldr);

if (ldr <= 3){

    if ((millis()/1000) == 0){
  digitalWrite (Re,LOW);
  }

    if ((millis()/1000) == 3600){
  digitalWrite (Re,HIGH);
  }

    if ((millis()/1000) == 14400){
   Serial.println("resetting");
   resetFunc();  //call reset

  delay(100);
  }
     }

if (ldr >4){
   digitalWrite(Re,HIGH);
   delay(5000);
   resetFunc();  //call reset

  delay(5000);
}
}