What time slots can I reserve as arrival times?

The park is open daily between 8am and 7.30pm. Keukenhof works with time slots of half an hour as arrival time. So you can choose from time slots like: 8.00 – 8.30 am, 8.30 – 9.00 am. The last time slot is 6 pm – 6.30 pm (Please note that the park closes at 7.30 pm. This means you can stay in the park for a maximum of an hour and a half).