All the shipping and deliveries expected in the future are registered in Delivery Date -> Calendar.
The expected shipping and deliveries are added to the calendar only when the order turns into one of the statuses you have specified in Settings->Event calendar settings->Order status.
You can also create holidays for those dates or time frames when the shop will be closed so that it won’t be possible to make deliveries during those days. For every holiday you create, you can specify the name, the carrier, the processing method, and the time frame. Moreover, you can enable or disable holidays singularly.