law: Negotiable Instruments Act, 1881 
  106. Reasonable time of giving notice of dishonor
  If the holder and the party to whom notice of dishonor is given
  
  carry on business or live (as the case may be) in different places, such notice
  
  is given within a reasonable time if it is dispatched by the next post or on
  
  the day next after the day of dishonor.
  If the said parties carry on business or live in the same place,
  
  such notice is given within a reasonable time if it is dispatched in time to reach
  
  its destination on the date next after the day of dishonor.