Ask a Librarian Chat Service Hours


Semester Hours

The Ask a Librarian service hours are:

Monday through Thursday from 9:00 am - 9:00 pm

Friday from 9:00 am - 6:00 pm

Saturday from 11:00 am - 6:00 pm

Sunday from 12:00 pm - 9:00 pm

During the summer and academic intersessions, the Ask a Librarian service is generally staffed:  

Monday - Friday 10:00 am - 6:00 pm

There may be periods when the service is unavailable. If that is the case, please contact us by one of the other means on the following page.


Use of Ask a Librarian services is limited to Columbia University faculty, students, staff, and alumni; and to those with questions specific to the Columbia University Libraries, the use of its collections, and its policies. If you’re not affiliated with Columbia University, please direct your query to your local public, state, or academic library.