Prophet Malachi, saint

Commemoratio sancti Malachiae, prophetae, qui, post transmigrationem Babylone diem magnum Domini eiusque adventum in templum nuntiavit semperque et ubique mundam oblationem nomini eius offerendam. (Roman Martyrology)

The commemoration of Saint Malachi, the prophet, who, after the Babylonian Exile, announced the great Day of the Lord, his coming into the Temple, and that an immaculate offering be made to His Name, always and everywhere.