May 13 is the 100th anniversary of the appearance of the Mother of Our Lord Jesus Christ, the Mother of God at Fatima, Portugal. In the traditional calendar, May 13 is the Feast (3rd class) of St. Robert Bellarmine. In the new calendar for the Novus Ordo Missae, it is the "Optional Memorial" of Our Lady of Fatima. An "Optional Memorial" is just that, the priest can choose the text for Our Lady of Fatima or the Ferial. The traditional calendar was never updated liturgically to recognise the appearance of Our Lady at Fatima.
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