DEMO LINK : http://demo-url.in/opencart_demo/index.php?route=information/information&information_id=7

Countdown Timer is a nice countdown extension, which is great for birthday countdown, new year countdown, event countdown, etc. It supports hours, seconds and days. You can define the countdown date and time in the admin back end. Highly configurable and backed with a 24x7 Customer Support package. This module is cross browser compatible and works on all the modern browsers. Bug Free and works great! Compatible with Opencart 2.0.1.0, 2.0.1.1, 2.0.2.0, 2.0.3.1, 2.1.0.1, 2.1.0.2 and 3.0.x.x. The Downloads Access and Extension Support is valid for 6 months from the date of purchase.