The use of the designated public forum may be requested for up to a four-hour time block between the hours of 8:00 a.m. and 9:00 p.m. during the academic year, and between the hours of 8:00 a.m. and 4:00 p.m. during the summer if the space is available and it is not during an exclusion period. Assemblies lasting more than 4 hours in a one-day period, a