In the system you have several options to see which day and time slot a visitor has booked.
Order overview
In the order summary you can filter on validity date, in the summary you can see for which day and time slot the order was booked.
Tip: you can search the order summary by name, e-mail address or order ID. When you click the order ID you get to the order detail screen where you can also see the time slot.
Exporting an event
When you export the event through the monitor screen you get an excel file at ticket level with, besides the customer data, also the days and time slots for which the tickets are booked.