Sterling Memorial Library and Bass Library will commence Summer hours on Wednesday, May 9th. The hours are generally:

Sterling Memorial Library
Monday – Wednesday 8:30am – 4:45pm
Thursday 8:30am – 9:45pm
Friday 8:30am – 4:45pm
Saturday 10:00am – 4:45pm
Sunday CLOSED

Bass Library
Monday – Thursday 8:30am – 9:45pm
Friday 8:30am – 4:45pm
Saturday 10:00am – 4:45pm
Sunday CLOSED

Please keep in mind that there are exceptions to these hours for holidays and special events. Please click here http://resources.library.yale.edu/libraryhours to consult these hours along with all of the Yale University Library locations.