Source code for our wedding website 👫 (https://we.shyamjos.com/) , Based on HTML theme https://freehtml5.co/wedding-free-html5-bootstrap-template-for-wedding-websites
To set the countdown date see below section in js/clock.js
// Target future date/24 hour time/Timezone
let targetDate = moment.tz("2023-10-29 12:00", "Asia/Kolkata");