Therefore, in practice usually a fixed length of 13 weeks per quarter is chosen which is then subdivided into 5 + 4 + 4 weeks, 4 + 5 + 4 weeks or 4 + 4 + 5 weeks.
因此，在實務中通常每一季固定有13個星期，並且分割成5+4+4週、4+5+4週、或4+4+5週。