Schedules Schedules Group lessons and open hours With an ACLO Card you can participate in group lessons and open hours at the ACLO. You can find the group lessons and open hours in the schedule. The difference between group lessons and open hours is that during the group lessons, the lesson is being given by a sports teacher. During the open hour, the sports teacher only acts as supervisor (like during the open hours climbing, futsal, and swimming). Course hours The ACLO offers courses in all kind of sports, as an introduction to a sport. The courses are given at beginners level and are free, unless indicated differently. For every course period there are certain deadlines that you have to take in account if you want to participate in a course. You can find the schedule of the course periods in 2021-2022 and the deadlines in the scheme below.