Libraries & Hours

Find current library hours and real-time space availability.

REGULAR HOURS

Plan your visit with up-to-date library hours for all Stony Brook University Library locations. View daily opening times, session schedules, and special service hours in one convenient place.

Jan 26 – Feb 1, 2026
LIBRARIES & HOURS
JAN 26
MONDAY
JAN 27
TUESDAY
JAN 28
WEDNESDAY
JAN 29
THURSDAY
JAN 30
FRIDAY
JAN 31
SATURDAY
FEB 01
SUNDAY
Closed
CAT Lab
9am – 5pm
9am – 5pm
9am – 5pm
9am – 5pm
Closed
Closed
Closed
Closed
Central Reading Room
OPEN 24-HOURS
OPEN 24-HOURS
OPEN 24-HOURS
OPEN 24-HOURS
8am – 8pm
12pm – 8pm
OPEN 24-HOURS
Opens at noon
Closed
Health Sciences Library
Staffed hours listed below. Library accessible 24/7 with SBU ID.
8:30am – 6pm
Staffed (24/7 ID Access)
8:30am – 6pm
Staffed (24/7 ID Access)
8:30am – 6pm
Staffed (24/7 ID Access)
8:30am – 6pm
Staffed (24/7 ID Access)
8:30am – 6pm
Staffed (24/7 ID Access)
Closed
24/7 ID Access Only
Closed
24/7 ID Access Only
Closed
Main Stacks/Interlibrary Loan
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
8:30am – 5pm
12pm – 5pm
12pm – 5pm
Closed
Music Library
9am – 5pm
9am – 5pm
9am – 5pm
9am – 5pm
Closed
Closed
Closed
Closed
North Reading Room
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
12pm – 8pm
12pm – 8pm
Closed
Southampton Library
9am – 5pm
9am – 5pm
9am – 5pm
9am – 5pm
9am – 5pm
Closed
Closed
Closed
Special Collections
By Appointment
By Appointment
By Appointment
By Appointment
By Appointment
Closed
Closed

Semester Hours

Full semester Schedules

Winter 2026

Dec 19, 2025 – jan 24, 2026

Spring 2026

Jan 25, 2023 – May 20,2026

Summer 2026

May 21, 2026 – Aug 23, 2026

Live Space Utilization​

Check real-time occupancy levels across library spaces using live sensor data. See which rooms are crowded, which have plenty of seating, and choose the best place to study before you arrive.

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Occupied

Hourly Traffic (Typical vs Now)

Chart room: —

Typical %
Now

Live Flow Data Disclaimer:
Occupancy data are based on anonymous entrance/exit sensors only. No Wi-Fi, Bluetooth, device, or personal data are collected.