From the linked page: > The 9-Euro-Ticket is available in the period from 1 June 2022 to 31 August 2022. > It is valid for one calendar month, from 00:00 on t

From the linked page: > The 9-Euro-Ticket is available in the period from 1 June 2022 to 31 August 2022. > It is valid for one calendar month, from 00:00 on the 1st until 24:00 on the 30th/31st.