Section 253. Executive budget hearings

Between the sixth day of May and
  the twenty-fifth day of May, the council shall hold public  hearings  on
  the  budget  as  presented  by  the  mayor.    The council may hold such
  hearings either  as  a  body  or  by  its  finance  committee  or  other
  committees.    Officers  of  agencies  and  representatives of community
  boards and borough boards shall have the right, and it  shall  be  their
  duty  when requested by the council, to appear and be heard in regard to
  the executive budget and  to  the  capital  and  service  needs  of  the
  communities, boroughs and the city.