Reporting period for State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data

Can you tell me what the reporting periods are for the State Medicaid and CHIP Applications, Eligibility Determinations, and Enrollment Data? E.g., for the report date 9/1/18, the report says that there were 58,913 total applications submitted at the State level in Illinois. Is that data for the month of September or the preceeding month (August 2018), or something else? Thank you!