====== Swatch Internet Time / .beat Time ======

<fs xx-large>#beatTime#</fs>
===== 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:**
  * All Apple devices, including Apple Watch - [[https://beattime.mulot.org/|BeatTime]]
  * Android Phones - [[https://f-droid.org/en/packages/eu.mirkodi.swatchbeatclock/index.html|Swatch .beat clock]], [[https://play.google.com/store/apps/details?id=xyz.poolp.swatchtime|Swatch Time]]
  * Pebble Smart Watches - [[https://apps.rebble.io/en_US/search/watchfaces/1?native=false&query=beat|See Beat apps]]
  * macOS Menubar - [[https://github.com/amiantos/dotbeat|dotbeat]]
  * GNOME Extension - [[https://extensions.gnome.org/extension/5946/swatch-clock/|Swatch Clock]]
  * Cinnamon Applet - [[https://cinnamon-spices.linuxmint.com/applets/view/310|Internet Time]]
  * Win 95/XP - [[https://web.archive.org/web/20081224143907/http://www.artefakt.com/projects/ibeat/|iBeat]], Works with Wine and OS's running Windows 7+ as well, not guaranteed to work in the year 2038
  * Winamp & WaCUP - [[https://getwacup.com/plugins/big_clock/|Big Clock]], Comes bundled with every copy of WaCUP (and Winamp, I think?), Right click on the big clock, then click on .beat time
  * iPad - [[https://apps.apple.com/us/app/beat-internet-time/id1570173118|Beat: Internet time]]
  * Color - [[rgbeat|RGBeat]], changes color depending on what time it is, in beat; [[https://melonking.net/hidden/rgbeat|Melon]], [[https://unnick.mice.tel/rgbeat/|Unick]]

===== Other useful links! =====

  * Swatch time [[https://forum.melonland.net/index.php?topic=1202.0|discussion thread]] on our forum!
  * The Swatch [[https://www.swatch.com/en-en/internet-time.html|intro video from 1998]]
  * Swatch Time History on [[https://en.wikipedia.org/wiki/Swatch_Internet_Time|Wikipedia]]
  * Decimal Time on Wikipedia [[https://en.wikipedia.org/wiki/Decimal_time]]

----

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

==== JavaScript: ====

**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!
<code>
<span id="swatchClock">@000</span>
<script defer src="https://melonking.net/scripts/swatchTime.js"></script>
</code>

**JavaScript - Full Code**
<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));
    }
}
</code>
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.
<code>
<span id="mySwatchClock"></span>
<script>
    var mySwatchClock = document.getElementById('mySwatchClock');
    function updateSwatchClock() {
        mySwatchClock.innerHTML = '@' + GetSwatchTime();
    }
    setInterval(updateSwatchClock, 864);
</script>
</code>

==== PHP: ====

PHP has native support for Swatch time, you can get the latest beat using this snippet:
<code>$swatchTime = date('B'); //000-999</code>

However if you would like a full function that also shows microbeats, we have that too!
<code>
// 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));
    }
}
</code>

==== BASH: ====
(note that Etc timezones are inverted)
Calculating Beat Time in bash is simple:
<code>
MIDNIGHT=$( TZ='Etc/GMT-1' date -d "12:00 am" +%s )
BTIME=$(( (($EPOCHSECONDS - $midnight) * 1000)  / 86400 ))
echo @$BTIME
</code>
However, you need to use an external program to calculate centibeats, since bash does not handle decimals well:

(using dc, which is a rpn calculator)
<code>
MIDNIGHT=$( TZ='Etc/GMT-1 date -d "12:00 am" +%s )

printf @
dc << EOF
# setting precision
2 k
# subtracting midnight from the current epoch
$EPOCHREALTIME $MIDNIGHT -
# converting to ms
1000 *
# divide by seconds in a day
86400 /
# print it to screen
p
EOF
</code>
To display it on your screen permanently, you can use any program that uses piped input, but lemonbar is the easiest to use:
<code>
while true
do
  MIDNIGHT=$( TZ='Etc/GMT-1' date -d "12:00 am" +%s )
  BTIME=$(( (($EPOCHSECONDS - $midnight) * 1000)  / 86400 ))
  echo @$BTIME
done | lemonbar -bg 48+0+18  # positions a little above the bottom left
</code>
(you can replace the code between the do and done with the dc version too)