Fingerprintable Date Vectors

HTML

<pre id="holder">

</pre>

JavaScript

function log(text) {
  var textNode = document.createTextNode(text + "\n");
  document.getElementById('holder').append(textNode);
}

log(new Date().toLocaleFormat());
log(new Date().toLocaleString());
log(new Intl.DateTimeFormat().format(new Date()));