There are 10 minute breaks between bookings, taken at the end of a booking to allow simultaneous take-down time for the previous booking and set-up time for the next. For example, a booking from 1:30 - 2:30 ends at 2:20. You should have time to reach your next meeting. Similarly, classes start on the hour or half hour as shown in the lecture sequence timetables. The end of a class is 10 minutes before the time shown to permit set-up/take-down times and to allow students time to get to their next class.