The ticket is valid from the moment you first check in until 4 am. after the last day of validity (the ticket is valid for 1, 2 or 3 days, depending on the variant). The day begins at midnight. Example: If you check in on Wednesday at midnight with your 2-day pass, it is valid until 4 am. on Friday. But if you check in on Wednesday at 8 pm. with your 2-day pass, it is also valid until Friday at 4 am..