Section 101(1) in The Juvenile Justice (Care and Protection of Children) Act, 2015
(1)Subject to the provisions of this Act, any person aggrieved by an order made by the Committee or the Board under this Act may, within thirty days from the date of such order, prefer an appeal to the Children's Court, except for decisions by the Committee related to Foster Care and Sponsorship After Care for which the appeal shall lie with the District Magistrate:Provided that the Court of Sessions, or the District Magistrate, as the case may be, may entertain the appeal after the expiry of the said period of thirty days, if it is satisfied that the appellant was prevented by sufficient cause from filing the appeal in time and such appeal shall be decided within a period of thirty days.