show you how to calculate time left to given date.

calculateTimeLeft.js

const now = new Date().getTime(); // current date
const futureDate = new Date('7 Feb 2023 16:40:00').getTime(); // setup time left

const timeleft = futureDate - now;

const days    = Math.floor( timeleft / (1000 * 60 * 60 * 24));
const hours   = Math.floor((timeleft % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
const minutes = Math.floor((timeleft % (1000 * 60 * 60)) / (1000 * 60));
const seconds = Math.floor((timeleft % (1000 * 60)) / 1000);

console.log(days + ' days ' + hours + ' hours ' + minutes + ' minutes ' + seconds + ' seconds left');

the reference article : https://dirask.com/posts/JavaScript-calculate-time-left-to-given-date-DlVdWj