Java-Scripts.net

Millennium Countdown (3001)

Planning way ahead? This script counts down the centuries, decades, and seconds until the clock strikes midnight on the first day of the 4th Millennium.

Time Until Year 3001
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Copy the Script

<div id="millennium"></div>

<script>
var end = new Date("Jan 1, 3001 00:00:00").getTime();

setInterval(function() {
    var now = new Date().getTime();
    var t = end - now;
    
    var days = Math.floor(t / (1000 * 60 * 60 * 24));
    var hours = Math.floor((t % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
    
    document.getElementById("millennium").innerHTML = days + " days " + hours + " hours";
}, 1000);
</script>

Frequently Asked Questions

Not really! It's mostly a demonstration of JavaScript's ability to handle large date ranges and 64-bit integers for time calculation.

Yes. The standard `Date` object can handle dates up to 100 million days relative to 1970, effectively supporting up to the year 275,760.

Yes. The internal calendar logic of modern browsers accounts for the complex leap year rules of the Gregorian calendar.