You have the possibility to add deviating opening hours on special days. Examples of special days are public holidays such as Christmas, Easter and other relevant days.
You can simply select the date, then select if you're open and which hours. Whenever you're location is closed, just mark you location as closed on that day and hit the Save button. You can add as many special opening hours as you want.
Please make sure to add special opening hours minimum 7 days in advance in order for all the data to be processed on time.