Section 44(2) in Real Estate (Regulation And Development) Act, 2016
(2)Every appeal made under sub-section (1) shall be preferred within a period of sixty days from the date on which a copy of the direction or order or decision made by the Authority or the adjudicating officer is received by the appropriate Government or the competent authority or the aggrieved person and it shall be in such form and accompanied by such fee, as may be prescribed:Provided that the Appellate Tribunal may entertain any appeal after the expiry of sixty days if it is satisfied that there was sufficient cause for not filling it within that period.