Countdown Javascript + PHP

<?php


$future_date = '02/19/2025 10:1 AM';
?>
<script>
var end = new Date('<?php echo $future_date;?>');

var _second = 1000;
    var _minute = _second * 60;
    var _hour = _minute * 60;
    var _day = _hour * 24;
    var timer;

function showRemaining() {
        var now = new Date();
        var distance = end - now;
        if (distance < 0) {

clearInterval(timer);
            document.getElementById('countdown').innerHTML = 'EXPIRED!';

return;
        }
        var days = Math.floor(distance / _day);
        var hours = Math.floor((distance % _day) / _hour);
        var minutes = Math.floor((distance % _hour) / _minute);
        var seconds = Math.floor((distance % _minute) / _second);

document.getElementById('countdown').innerHTML = days + ' days ';
        document.getElementById('countdown').innerHTML += hours + ' hrs ';
        document.getElementById('countdown').innerHTML += minutes + ' mins ';
        document.getElementById('countdown').innerHTML += seconds + ' secs';
    }

timer = setInterval(showRemaining, 1000);
</script>
<div id="countdown"></div>