Section 36. Local laws; passage

No local law shall be passed until it
  shall have been in its final form and upon  the  desks  of  the  council
  members at least seven calendar days, exclusive of Sundays, prior to its
  final passage, unless the mayor shall have certified as to the necessity
  for  its  immediate  passage  and  such  local  law  be  passed  by  the
  affirmative vote of two-thirds of all the council members.