The binding legal principles established are: (1) The test for condonation in the Constitutional Court is whether it is in the interests of justice, considering factors including the nature of relief sought, extent and cause of delay, effect on administration of justice, reasonableness of explanation for delay, importance of the issue, and prospects of success. (2) An applicant for condonation must give a full and reasonable explanation covering the entire period of delay. (3) Even where important constitutional issues are raised, condonation will not be granted where there is inordinate delay coupled with absence of reasonable explanation, particularly where the matter has become moot between the parties. (4) Inordinate delay induces a reasonable belief that an order has become unassailable, and the principle of finality in litigation entitles parties to closure. (5) Under Rule 11(4), the Constitutional Court has discretion to deal with applications summarily in chambers on written argument, in chambers on affidavits only, or by setting matters down for oral argument, depending on the complexity of issues and what is necessary to dispose of the matter. (6) Material facts affecting justiciability (such as subsequent availability of information sought) must be disclosed to the Court even if they arise after the founding affidavit is sworn.