// Set the date we're counting down to
var countDownDate = new Date("Aug 19, 2019 10:00:00").getTime();

// Update the count down every 1 second
var x = setInterval(function () {

    // Get todays date and time
    var now = new Date().getTime();

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

    // Time calculations for days, hours, minutes and seconds

    var hours2 = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));


    // Output the result in an element with id="demo"
    document.getElementById("timer").innerHTML =  hours2

    // If the count down is over, write some text
    if (distance < 0) {
        clearInterval(x);
        document.getElementById("timer").innerHTML = "Elapso tempore" + hours2;
    }
}, 1000);