The countdown timer feature is available to all customers but it is not turned on by default.
You can use this feature if customers need to order before a certain time for same day order processing. This helps increase urgency because the customers know if they want to get the product sooner they need to order right away. The countdown timer gives them a deadline for making the order.
You can enable the countdown timer in your theme editor in the ArrivesBy extension settings
You can configure the cutoff time in the app settings page, in the Advanced section.
You can set the cutoff time based on your shop's logistics. For example, set it to 2pm if the customers need to order by 2pm for same day order processing.