uptime.js

const uptime = this.client.uptime;

const date = new Date(uptime);
const days = date.getUTCDate() - 1,
	  hours = date.getUTCHours(),
	  minutes = date.getUTCMinutes(),
	  seconds = date.getUTCSeconds();
	  
// Initialize an array for the uptime. 
let segments = [];

// Format the uptime string. 	
if (days > 0) segments.push(days + ' day' + ((days == 1) ? '' : 's'));
if (hours > 0) segments.push(hours + ' hour' + ((hours == 1) ? '' : 's'));
if (minutes > 0) segments.push(minutes + ' minute' + ((minutes == 1) ? '' : 's'));
if (seconds > 0) segments.push(seconds + ' second' + ((seconds == 1) ? '' : 's'));
const dateString = segments.join(', ');

// Return the uptime.
console.log("Today is: " + dateString);