Changing a HTML element at a certain time and date

I have an open and closed indicator (Thanks to those who helped me!) that shows I am open from 8:00 AM to 10:00 PM and from 10:00 PM to 8:00 AM I am closed, but it shows this even on a weekend when I am not open. Can you help me make the Javascript say I am closed when it is a weekend and on a holiday like December 24-25? Below will be my current code. Thanks!

Javascript:

var messageElement = document.getElementById("message");
var circleElement = document.getElementById("circle");

const refreshStatus = () => {
  // Set the current time
  let currentDate = new Date().getHours();
  // If the time is between 8 am and 10 pm
  if (currentDate >= 8 && currentDate <= 21) {
    // Update text and add classes
    messageElement.innerHTML = "We are open until 10 PM";
    circleElement.className = 'open-circle';
    messageElement.className = 'open-p';
  } else {
    // 21 pm to 8 am
    messageElement.innerHTML = "We are closed until 8 AM";
    circleElement.className = 'closed-circle';
    messageElement.className = 'closed-p';
  }
}

// run when starting
refreshStatus();

// updates every 8 seconds
setInterval(refreshStatus, 8000);

CSS:

/* Start indicator CSS */

.open-circle {
  position: relative;
  top: 23rem;
  height: 1.5625rem;
  width: 1.5625rem;
  background-color: #00BF13;
  border-radius: 50%;
  display: inline-block;
}

.open-p {
  position: relative;
  top: 23rem;
  color: #00BF13;
  font-weight: bold;
  display: inline-block;
  width: 8rem;
}

.closed-circle {
  position: relative;
  top: 23rem;
  height: 1.5625rem;
  width: 1.5625rem;
  background-color: #ea001d;
  border-radius: 50%;
  display: inline-block;
}

.closed-p {
  position: relative;
  top: 23rem;
  color: #ea001d;
  font-weight: bold;
  display: inline-block;
  width: 8rem;
}

/* End indicator CSS */

HTML:

<!-- Start status indicator -->

<div id="circle"></div>
<p id="message">We are open until 10 PM</p>
<script src="js/open-closed-indicator.js"></script>

<!-- End status indicator -->