barebones clock
HTML
<span id="time">0:00:00</span>JavaScript
function clock() {
let currentTime = new Date().toLocaleString("en-US", {timeZone: 'America/New_York'});
let justTime = currentTime.split(', ')[1];
let timeElement = document.getElementById("time");
timeElement.innerHTML = "<p>" + justTime + "</p>";
}
clock();
setInterval(clock, 1000);