Countdown affiche des NaN : NaN : NaN : NaN

<?php if(count($info) > 0){ ?>

<?php echo $date = ($p->promo);

// Parse the string based on the expected format
$dtime = DateTime::createFromFormat("Y-m-d H:i:s", $date);

// Output the date to match the required format
$timestamp = $dtime->format('F j, Y H:i');
?>
<p class="countdown-timer" id="demo"></p>		
<?php }else { ?>

	<em> Rien </em>

	<?php } ?>

<?php
$date = $p->promo;
if ( !empty($date) && strtotime($date) != '0000-00-00') {
  // Parse the string based on the expected format
  $dtime = DateTime::createFromFormat("Y-m-d H:i:s", $date);

  // Output the date to match the required format
  $timestamp = $dtime->format('F j, Y H:i');

}else{
  $timestamp = "";
}

// Set the date we're counting down to
var cdate = "<?php echo $timestamp; ?>";
if(cdate !=""){
  var countDownDate = new Date(cdate).getTime();
  // Update the count down every 1 second
  var x = setInterval(function(){

  // Get today's date and time
  var now = new Date().getTime();

  // Find the distance between now and the count down date
  var distance = countDownDate - now;

  // Time calculations for days, hours, minutes and seconds
  var days = Math.floor(distance / (1000 * 60 * 60 * 24));
  var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
  var seconds = Math.floor((distance % (1000 * 60)) / 1000);

  // Output the result in an element with id="demo"
  document.getElementById("demo").innerHTML = days + ": " + hours + " : "
  + minutes + ": " + seconds + " ";


  // If the count down is over, write some text 
  if (distance < 0) {
  clearInterval(x);
  document.getElementById("demo").innerHTML = "EXPIRED";

  }
  }, 1000);
}

$date = $p->promo;
if ( !empty($date) && strtotime($date) != '0000-00-00 00:00:00') {
  // Parse the string based on the expected format
  $dtime = DateTime::createFromFormat("Y-m-d H:i:s", $date);

  // Output the date to match the required format
  $timestamp = $dtime->format('F j, Y H:i');

}else{
  $timestamp = "";
}




 

<input type="datetime-local" value="2018-02-25T19:24:23"/> 

@DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss")
        private Date createdAt;