There is no option available in the theme for using countdown timer in the footer but I can suggest you some workaround, you can use Countdown Timer Shortcode in the footer. Please follow the below URL for retrieving the Countdown Timer Shortcode.
Thank you Abhishek for getting back to me. I did happen to work something out, after all, but it took me a couple of days. Thanks for the code.
Happy to Help You 🙂