law: Negotiable Instruments Act, 1881 
  25. When day of maturity is a holiday 
  When the day on which a promissory note or bill of exchange is
  
  at maturity is a public holiday, the instrument shall be deemed to be due on
  
  the next preceding business day.
  Explanation:  The expression "Public Holiday"
  
  includes Sundays 15[***] and any other day declared by the 16[Central
  
  Government], by notification in the Official Gazette, to be a public holiday.