JSFiddle - React, Tailwind, and code Playground

by grant

HTML

<p id="demo"></p>
<p id="today"></p>
how
set the countdowndate to today at 9am
run it on sun am and wed am

JavaScript

var today = new Date()
var dayN = today.getDate()
var dayOfWeek = today.getDay()
var hour = today.getHours()
var sunAm = today.setHours(9, 0, 0)
var options = { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric', hours: 'numeric' };
document.getElementById("today").innerHTML = sunAm;

//new Date(Date.UTC(year, month, day, hour, minute, second))
var d = new Date(2022, 0, 30, 9, 0, 0)
let human = d.toLocaleString();
console.log(human)


var countDownDate = today.setHours(14, 0, 0)

sunWed(countDownDate)
//console.log(sunAm)

//====================
function sunWed(countDownDate){
// Update the count down every 1 second
var x = setInterval(function() {

  // Get today's date and time feb 5 sat
  //var now = new Date().setFullYear(2022, 1, 5);
  var now = new Date()
  //console.log(now)
    
  // Find the distance between now and the count down date
  var distance = countDownDate - now;
    
  // Time calculations for days, hours, minutes and seconds
  var days = Math.floor(distance / (1000 * 60 * 60 * 24));
  var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
  var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
  var seconds = Math.floor((distance % (1000 * 60)) / 1000);
    
  // Output the result in an element with id="demo"
  document.getElementById("demo").innerHTML = days + "d " + hours + "h "
  + minutes + "m " + seconds + "s ";
    
  // If the count down is over, write some text 
  if (distance < 0) {
    clearInterval(x);
    document.getElementById("demo").innerHTML = "EXPIRED";
  }
}, 1000);
}