The Friedman Study Center is open continuously (24/7) until 5 pm on Friday December 21. From Thursday 12/6 until the end of exams, the Rockefeller Library is open 7:30 am – 2 am, Monday – Saturday and 10 am – 2 am Sunday. The John Hay Library, in addition to their regular hours (including 1 to 5 pm Sunday hours) will be open on Saturday 12/8 and 12/15, noon to 5 pm. All other campus libraries will maintain usual hours. Printed schedule available here.