In 1662, the Cavalier Parliament passed the Act of Uniformity of 1662, restoring the Book of Common Prayer as the official liturgy. The Act of Uniformity prescribed that any minister who refused to conform to the Book of Common Prayer by St. Bartholomew's Day 1662 would be ejected from the Church of England. This date became known as Black Bartholomew's Day, among dissenters, a reference to the fact that it occurred on the same day as the St. Bartholomew's Day massacre of 1572.