law: Special Economic Zones Act, 2005 
  57. Amendment of certain
  
  enactments 
  With effect from such date as the Central
  
  Government may, by notification, appoint, the enactments specified in the Third
  
  Schedule shall be amended in the manner specified therein :
  Provided that different dates may be appointed
  
  on which the amendments specified in the Third Schedule shall apply to a
  
  particular Special Economic Zone or a class of Special Economic Zones or all
  
  Special Economic Zones.