An appeal against an order of a STATE Commission lies to the National Commission within which period?

Under Section 51 of the Consumer Protection Act, 2019, an appeal against the order of a State Commission lies to the National Commission within thirty days from the date of the order, with the consumer fora empowered to condone further delay for sufficient cause. (An appeal from a District Commission to the State Commission under Section 50 is allowed within forty-five days.) The appeals operate on a hierarchical ladder from District to State to National Commission. Time-frames in the consumer pyramid are a frequently recurring numerical question.