Quod auctoritate is an encyclical published by Pope Leo XIII on 22 December 1885.

It has the subtitle: "The Annunciation of an Extraordinary Holy Year", [1] which coincided with the fiftieth anniversary of the pope's ordination.

The Holy Jubilee has only the salvation of hearts as its purpose, and it serves not only the individual but all nations.

Among the rules established in order to obtain the Holy Year indulgence were: the usual conditions of confession and communion with a visit to a designated church.

Seafarers and travellers fulfil their duties if they visit their main or parish church six times and comply with the aforementioned rules.