Information on Library hours is also available at service desks, as individual department hours vary. The flashing of lights signals that the Library is closing. The lights are flashed 15 and 5 minutes before the library closes. In addition, bullhorns are used in the research towers. Prepare to leave the building immediately after the first signal has been given.
Elevators stop promptly at closing time.
During the fall, winter, and spring quarters, access to the Library after 5 p.m. on weekdays, after 12 noon on Saturday, and all day Sunday is limited to members of the Northwestern community, who must show their WildCARD for admittance.