All motions in the supreme or superior court shall be in writing and, except ex parte motions, shall be filed at least sixty (60) hours, exclusive of Sundays and legal holidays, before being called for hearing; and, except in ex parte motions, notice in writing shall be served upon the attorney or solicitor of record of the opposite side, or, if there is no such attorney or solicitor of record, upon the adverse party, at least forty-eight (48) hours, exclusive of Sundays and legal holidays, before being called for hearing, unless a different time for the filing and service is fixed ex parte by a justice of the court.