law: Weekly Holidays Act, 1942
  5. Additional half-day closing of holiday
  (1) The State Government may, by notification in the Official
  
  Gazette, require in respect of shops or any specified class of shop that they
  
  shall be closed at such hour in the afternoon of one week-day in every week in
  
  addition to the day provided for by section 3 as may be fixed by the State
  
  Government, and, in respect of theatres and restaurants or any specified class
  
  of either or both, that every person employed therein otherwise than in a
  
  confidential capacity or in a position of management shall be allowed in each
  
  week an additional holiday of one half-day commencing at such hour in the after
  
  noon as may be fixed by the State Government.
  (2) The State Government may, for the purposes of this section,
  
  fix different hours for different shop or different classes of shop or for
  
  different areas or for different times of the year.
  (3) The weekly day on which a shop is closed in pursuance of a
  
  requirement under sub-section (1) shall be specified by the shop-keeper in a
  
  notice permanently exhibited in a conspicuous place in the shop and shall not
  
  be altered by the shop-keeper more often than once in three months.