BlockHour: Business Hours Gate

BlockHour is a Shopify App that allows ecommerce merchants to block checkout outside of their business hours with server-side validation. Merchants can set business hours per day with 30-minute precision, support overnight hours that cross midnight, add holidays to block orders on specific days, and instantly block checkout with the 'Close store now' toggle. Customizable messages can be shown to customers when checkout is blocked. No theme code changes are required for installation, simply set the timezone, hours, and enable the app.