Signum Magnum
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Signum Magnum (Latin for a great sign) is an apostolic exhortation on consecration to the Blessed Virgin Mary by Pope Paul VI. It was released on May 13, 1967 in Saint Peter's Basilica in Rome, on the 50th anniversary of Our Lady of Fátima, to coincide with the Pope's visit to the Sanctuary of Fátima, in Cova da Iria, Portugal.