We'll create fresh WordPress site with WooCommerce Coupon Schedule installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin replaces default coupon expiry field with dedicated tab where fields for setting coupon validity start date and time along with expiry date and time are shown.
New “Valid from” column is added to coupons list in admin panel and “Expiry date” column is tweaked to show expiry time.