Overnight Study

Eligible Users

Open to current UC San Diego students, faculty, and staff only. Valid UC San Diego ID card required during overnight hours. On request, users must show valid UC San Diego-issued ID card. Users without valid UC San Diego-issued ID card must leave the building until regular library hours resume.

Location & Access

Geisel East Commons (limited to main/2nd floor of Geisel's east side). After midnight, eligible users may enter through main entrance and proceed to the east (right). Access prohibited to closed & staff-only areas.


Basic safety & security is provided overnight. Other library services are not provided. Security staff will report equipment problems, but cannot provide computer, printing, reserves, or research assistance.


Overnight hours begin at midnight (00:00) and end at 7:30 a.m. (07:30) Monday through Friday. Available during fall, winter, and spring academic quarters only (excluding campus holidays). Policies include any additional overnight hours or areas offered during final exam periods.

Day of Week Hours of Operation
Monday Midnight–7:30 a.m.
Tuesday Midnight–7:30 a.m.
Wednesday Midnight–7:30 a.m.
Thursday Midnight–7:30 a.m.
Friday Midnight–7:30 a.m.

View regular Geisel building hours.


Seating available for about 500, including 100 computer workstations, as well as large & small study tables, individual study carrels, comfortable chairs, group study rooms. Electrical outlets, copiers, and scanners also available.  The Active Learning Lab is open overnight, but the Digital Media Lab is not.

Security & Reporting Problems

Library Security staff provided to ensure safety & security overnight. Report security problems or concerns to Security staff on duty or email Library_Safety_and_Security@AD.UCSD.EDU. Report non-emergency problems related to Overnight Study Commons to lflor@ucsd.edu.


Report emergencies to Security staff on duty, call Campus Police at 858-534-4357, or call 911.

Use Policies

  • Conduct: The UC San Diego Student Conduct Code & Library Use & Conduct Policies apply to all library areas at all times. For safety & security, additional policies apply to the Geisel Overnight Study Commons. Failure to follow these policies may result in temporary or permanent loss of access to UC San Diego Library facilities.
  • Food & Drink: Library food & drink policy applies overnight in the Commons. In compliance with California State Law, UC San Diego policy prohibits consumption of alcohol. Dispose of trash & recyclables in appropriate containers and clean spills, crumbs, and sticky surfaces immediately. Notify security staff for larger spills.
  • Sleeping: University policy ( PPM 516-10.3) and the Library Use & Conduct Policies restrict library areas from being used for sleeping or living quarters. Camping equipment (tents, sleeping bags) & furniture arrangements designed for sleeping are not permitted.


The Study Commons is being funded in part by a gift from the Alice G. Marquis Living Trust.

Comments or Questions?  

Send questions, comments, and suggestions to  LearningSpaces@ucsd.edu.