2006 New York Code - Courts Not To Sit On Sunday Except In Special Cases Nor On Saturday In Certain Cases.

 
    §  5.  Courts  not  to  sit  on  Sunday except in special cases nor on
  Saturday in certain cases. A court shall not be opened, or transact  any
  business  on  Sunday,  nor  shall  a  court  transact  any business on a
  Saturday in any case where such day is kept as a holy day by  any  party
  to the case, except to receive a verdict or discharge a jury and for the
  receipt  by  the  criminal  court  of the city of New York or a court of
  special sessions of a plea of guilty and the pronouncement  of  sentence
  thereon in any case in which such court has jurisdiction. An adjournment
  of  a court on Saturday, unless made after a cause has been committed to
  a jury, must be to some other day than Sunday. But this section does not
  prevent the exercise of the jurisdiction of a magistrate,  where  it  is
  necessary  to  preserve  the  peace,  or, in a criminal case, to arrest,
  commit or discharge a person charged with an offense, or the granting of
  an injunction order by a justice  of  the  supreme  court  when  in  his
  judgment  it  is necessary to prevent irremediable injury or the service
  of a summons with or without a complaint if accompanied by an injunction
  order and an order of such justice permitting service on that day.