JSFiddle - React, Tailwind, and code Playground

HTML

<div id="first">
  waiting...
</div>
<div id="second">
  waiting...
</div>

JavaScript

window.setInterval(function() {
	document.getElementById("first").innerHTML = new Date().toString();
}, 5000);
window.setInterval(function() {
	document.getElementById("second").innerHTML = new Date().toString();
}, 2592000000);