Blackout dates are periods during which shipping or delivery is unavailable due to holidays, special events, or other operational factors. With this plugin, you can set global shipping and delivery blackout dates to ensure accurate estimations even during non-operational periods. To manage global blackout dates: from the WordPress backend, navigate to WooCommerce -> Settings -> Shipping (tab) -> Estimated Delivery Blackout Dates (link in the shipping sub-navigation). From here, enter or select a date on the calendar to mark it as unavailable or to remove its eligibility for either shipping or delivery on that date. Once the date has passed, the field will turn yellow. You can update the date to the following year, delete the date with the minus button, or leave it as is for historical reference.