Section 27A(3) in The Consumer Protection Act, 1986
(3)Every appeal under this section shall be preferred within a period of thirty days from the date of an order of a District Forum or a State Commission or, as the case may be, the National Commission:Provided that the State Commission or the National Commission or the Supreme Court, as the case may be, may entertain an appeal after the expiry of the said period of thirty days, if, it is satisfied that the appellant had sufficient cause for not preferring the appeal within the period of thirty days.