JSFiddle - React, Tailwind, and code Playground

HTML

Current DateTime:<br/> <span id="currDateTime"></span><br/><br/>
Minus DateTime(-5 min):<br/> <span id="minusDateTime"></span><br/><br/>
Add DateTime(+5 min):<br/> <span id="addDateTime"></span><br/><br/>

JavaScript

var currDateTime = new Date(),
    hr = currDateTime.getHours(),
    min = currDateTime.getMinutes(),
    dd = currDateTime.getDate(),
    mm = currDateTime.getMonth() + 1,
    yyyy = currDateTime.getFullYear();

//adding pad while getting singles in date or month between 0-9
if(dd < 10){ dd = '0' + dd}     if(mm < 10){ mm = '0' + mm} 

//current date and time as per UTC format
currDateTime = yyyy +'/'+ mm +'/'+ dd +" "+ hr + ':' + min + ":00";
$("#currDateTime").text(new Date(currDateTime).toUTCString());

//minus -5 minutes to actual date and time
currDateTime = yyyy +'/'+ mm +'/'+ dd + " "+ hr + ':' + (min - 5) + ":00";
$("#minusDateTime").text(new Date(currDateTime).toUTCString());

//we are now going to add +5 min to currDateTime
currDateTime = yyyy +'/'+ mm +'/'+ dd + " "+ hr + ':' + (min + 5) + ":00";
$("#addDateTime").text(new Date(currDateTime).toUTCString());