Answer by X Pahadi for How do I get the difference between two Dates in JavaScript?

See JsFiddle DEMO

    var date1 = new Date();        var date2 = new Date("2025/07/30 21:59:00");    //Customise date2 for your required future time    showDiff();function showDiff(date1, date2){    var diff = (date2 - date1)/1000;    diff = Math.abs(Math.floor(diff));    var days = Math.floor(diff/(24*60*60));    var leftSec = diff - days * 24*60*60;    var hrs = Math.floor(leftSec/(60*60));    var leftSec = leftSec - hrs * 60*60;    var min = Math.floor(leftSec/(60));    var leftSec = leftSec - min * 60;    document.getElementById("showTime").innerHTML = "You have "+ days +" days "+ hrs +" hours "+ min +" minutes and "+ leftSec +" seconds before death.";setTimeout(showDiff,1000);}

for your HTML Code:

<div id="showTime"></div>