The Canons of the Synods of Sardica, Carthage, Constantinople, and Carthage Under St. Cyprian, Which Canons Were Received by the Council in Trullo and Ratified by II. Nice 96Canon LXXIII.

The date of Easter and the date of the Council should be announced.

Item, it seemed good that the day of the venerable Easter should be intimated to all by the subscription of formed letters; and that the same should be observed with regard to the date of the Council, according to the decree of the Council of Hippo, that is to say the X. Calends of September, and that it should be written to the primates of each province so that when they summon their councils they do not impede this day.