Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 220, § 5

If it is unsafe or inexpedient to hold a court at the time and place appointed, a justice of the court may appoint another time and place within the same county for holding the same. Such adjournment shall be made by an order in writing, signed by the justice or justices, and served by public proclamation by the person to whom it is directed in the shire town or as near thereto as is safe, and also by publication in such newspaper or in such other manner as is required in the order.