When will there be a written test for railway recruitment?

The recruitment of the railway bureau is carried out from September to June, and there is a written test in April and July every year. Written test content: the written test is closed and answers objective questions. The test time is 2 hours. The examination subject is "Administrative Professional Ability Test". The examination contents include: common sense judgment, speech understanding and expression, quantitative relationship, judgment and reasoning, data analysis and so on.