Swatch Internet Time / .beat Time


Swatch time is a universal standard time for the entire internet! It lets you plan events or meetups with your friends from anywhere in the world and not have to worry about timezones or other annoyances! Its also hella hacker and very cool to use :^)

It was originally invented by the Swatch Company in 1998 although it did not gain much widespread popularity - however it's used on MelonLand and many other web revival sites as a standard means of organisation and planning!

How does it work?

It divides the day into 1000 “beats”. Instead of using hours, minutes, and seconds to represent time, Swatch Internet Time uses a single decimal number ranging from 000 to 999. Each beat is equivalent to 1 minute and 26.4 seconds. Sometimes you'll also see some extra numbers like “.56” these are microbeats and are similar to seconds.

Swatch time is usually preceded by an @ symbol; this helps you know its swatch time and not some random number! For example @123 or @542.69

000 in Swatch time is the same as Midnight UTC+1; but because swatch time does not use timezones, midnight will be different for everyone. The goal of swatch time is not to provide the relative time you can use in your daily life; it's for worldwide events that all need to happen at the same time!

How can I use swatch time in my life?

Easy; just use swatch time when you are planning your events or meetups and get your friends to do the same! There are even some apps that can help you!

Swatch Time Apps for various platforms:

Code Snippets

You can also include a swatch clock on your website; here are some premade code snippets you can use!


JavaScript - Easy Option

Here is a premade JavaScript clock for your website! Just paste this code onto your page wherever you want your clock to be and it will work!

<span id="swatchClock">@000</span>
<script defer src=""></script>

JavaScript - Full Code

// Returns the current Swatch beat
function GetSwatchTime(showDecimals = true) {
    // get date in UTC/GMT
    var date = new Date();
    var hours = date.getUTCHours();
    var minutes = date.getUTCMinutes();
    var seconds = date.getUTCSeconds();
    var milliseconds = date.getUTCMilliseconds();
    // add hour to get time in Switzerland
    hours = hours == 23 ? 0 : hours + 1;
    // time in seconds
    var timeInMilliseconds = ((hours * 60 + minutes) * 60 + seconds) * 1000 + milliseconds;
    // there are 86.4 seconds in a beat
    var millisecondsInABeat = 86400;
    // calculate beats to two decimal places
    if (showDecimals) {
        return Math.abs(timeInMilliseconds / millisecondsInABeat).toFixed(2);
    } else {
        return Math.floor(Math.abs(timeInMilliseconds / millisecondsInABeat));

If you want it to display on your webpage and auto-update here is an example - first, we make a span with an id, this is where the clock will appear on your page - then we get that span in a script, make a function that fills it with the swatch time, and finally, we set it to reload every microbeat.

<span id="mySwatchClock"></span>
    var mySwatchClock = document.getElementById('mySwatchClock');
    function updateSwatchClock() {
        mySwatchClock.innerHTML = '@' + GetSwatchTime();
    setInterval(updateSwatchClock(), 864);


PHP has native support for Swatch time, you can get the latest beat using this snippet:

$swatchTime = date('B'); //000-999

However if you would like a full function that also shows microbeats, we have that too!

// Returns the current Swatch beat
function GetSwatchTime($showDecimals = true)
    // Get time in UTC+1 (Do not Change!)
    $now = new DateTime("now", new DateTimeZone("UTC"));
    $now->add(new DateInterval("PT1H"));
    // Calculate the seconds since midnight e.g. time of day in seconds
    $midnight = clone $now;
    $midnight->setTime(0, 0);
    $seconds = $now->getTimestamp() - $midnight->getTimestamp();
    // Swatch beats in seconds - DO NOT CHANGE
    $swatchBeatInSeconds = 86.4;
    // Calculate beats to two decimal places
    if ($showDecimals) {
        return number_format(round(abs($seconds / $swatchBeatInSeconds), 2), 2);
    } else {
        return floor(abs($seconds / $swatchBeatInSeconds));