JSFiddle - React, Tailwind, and code Playground

JavaScript

function secondstotime(secs)
{
    var t = new Date(1970,0,1);
    t.setSeconds(secs);
    var s = t.toTimeString().substr(0,8);
    if(secs > 86399)
    	s = Math.floor((t - Date.parse("1/1/70")) / 3600000) + s.substr(2);
    if(s.substr(0, 2) == 00)
        return s.substr(3);
    return s;
}

alert(secondstotime(1920));