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Columbia University Library Hours
Semester Summary - Spring 2012
Stacks and service desks may close before the stated times: closing procedures may begin up to 30 minutes before the stated times. Library hours change during holiday, examination, and intersession periods, and this information may be found under "Exceptions" or by contacting individual libraries.
This summary only represents typical hours for the semester. Individual library hours pages should always be consulted for the most up-to-date information.
| Location | Mondays | Tuesdays | Wednesdays | Thursdays | Fridays | Saturdays | Sundays |
| Avery | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-9pm | 10am-7pm | Noon-10pm |
| Barnard College Library | 8:45am-Midnight | 8:45am-Midnight | 8:45am-Midnight | 8:45am-Midnight | 8:45am-6pm | 10am-6pm | 10am-Midnight |
| Burke | 8:30am-10pm | 8:30am-10pm | 8:30am-10pm | 8:30am-10pm | 8:30am-5pm | 10am-5pm | 1pm-10pm |
| Business & Economics | 8am-Midnight | 8am-Midnight | 8am-Midnight | 8am-10pm | 8am-9pm | 10am-9pm | 10am-11pm |
| Exceptions: reduced hours, May 17-May 18: 9am-5pm | |||||||
| Butler Library | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-9pm | 11am-6pm | Noon-11pm |
| Exceptions: Building Hours, May 17: 9am-9pm; Building Hours, May 18: 9am-7pm | |||||||
| Butler Media Center | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-9pm | 11am-6pm | Noon-11pm |
| Exceptions: May 18: 9am-7pm | |||||||
| Butler Reserves | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-9pm | 11am-6pm | Noon-11pm |
| Exceptions: May 18: 9am-7pm | |||||||
| Digital Humanities Center | 11am-6pm | 11am-9pm | 11am-9pm | 11am-9pm | 11am-6pm | Noon-6pm | Noon-6pm |
| DSSC Data Service | 11am-5pm | 11am-5pm | 11am-5pm | 11am-5pm | 1pm-5pm | Closed | Closed |
| Engineering | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-6pm | 11am-6pm | 11am-10pm |
| Geology | 9am-10pm | 9am-10pm | 9am-10pm | 9am-10pm | 9am-5pm | Noon-5pm | 2pm-10pm |
| Geoscience | 9am-5pm | 9am-5pm | 9am-5pm | 9am-5pm | 9am-5pm | Closed | Closed |
| Health Sciences | 8am-11pm | 8am-11pm | 8am-11pm | 8am-11pm | 8am-8pm | 10am-11pm | Noon-11pm |
| Interlibrary Loan Services | 9am-5pm | 9am-5pm | 9am-5pm | 9am-5pm | 9am-5pm | Closed | Closed |
| Journalism | 1pm-8pm | 1pm-8pm | 1pm-8pm | 1pm-8pm | 1pm-6pm | 10am-6pm | 2pm-8pm |
| Exceptions: Intersession, May 17: 1pm-6pm | |||||||
| Law | 8am-Midnight | 8am-Midnight | 8am-Midnight | 8am-Midnight | 8am-Midnight | 10am-8pm | 10am-Midnight |
| Lehman Social Sciences Library | 9am-Midnight | 9am-Midnight | 9am-Midnight | 9am-Midnight | 9am-7pm | 10am-6pm | 11am-11pm |
| Exceptions: Intersession, May 19: CLOSED | |||||||
| Library Information Office | 9am-5:45pm | 9am-5:45pm | 9am-5:45pm | 9am-5:45pm | 9am-5:45pm | 11am-5:45pm | Noon-4:45pm |
| Exceptions: May 20: CLOSED | |||||||
| Mathematics Library | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-6pm | 11am-6pm | 2pm-10pm |
| Milstein 23 Hour Rooms | 24 Hours | 24 Hours | 24 Hours | 24 Hours | 24 Hours | 24 Hours | 24 Hours |
| Music & Arts | 9am-9pm | 9am-9pm | 9am-9pm | 9am-9pm | 9am-5pm | Noon-8pm | 1pm-9pm |
| Oral History Research Office | 9am-5pm | 9am-5pm | 9am-5pm | 9am-5pm | 9am-5pm | Closed | Closed |
| Periodicals & Microforms | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-9pm | 11am-6pm | Noon-11pm |
| Exceptions: May 17: 9am-9pm; May 18: 9am-7pm | |||||||
| Rare Book & Manuscript | 9am-7:45pm | 9am-4:45pm | 9am-4:45pm | 9am-4:45pm | 9am-4:45pm | Closed | Closed |
| Science & Engineering Library | 9am-3am | 9am-3am | 9am-3am | 9am-10:30pm | 9am-6:30pm | 11am-6:30pm | 11am-3am |
| Social Work | 10am-8pm | 10am-9pm | 10am-9pm | 10am-9pm | 10am-6pm | 10am-6pm | Noon-8pm |
| Exceptions: Spring Intersession, May 17: 10am-6pm | |||||||
| Starr East Asian | 9am-11pm | 9am-11pm | 9am-11pm | 9am-11pm | 9am-7pm | Noon-7pm | Noon-10pm |
| Exceptions: May 19: CLOSED | |||||||
| Teachers College | 8am-11pm | 8am-11pm | 8am-11pm | 8am-11pm | 8am-11pm | 8am-8pm | 10am-10pm |
| University Archives | 9am-7:45pm | 9am-4:45pm | 9am-4:45pm | 9am-4:45pm | 9am-4:45pm | Closed | Closed |