| Annum sacrum Latin for 'A Holy Year' Encyclical of Pope Leo XIII | |
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| Signature date | 25 May 1899 |
| Subject | Consecration to the Sacred Heart |
| Number | 71 of 85 of the pontificate |
| Text | |
Annum sacrum (meaning 'Holy Year') is an encyclical by Pope Leo XIII on the consecration of the whole human race to the Sacred Heart of Jesus. It was delivered in Saint Peter's Basilica in Rome on 25 May 1899, in the twenty-second year of his pontificate.