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.

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Jan 19 – Jan 25, 2026
LIBRARIES & HOURS
JAN 19
MONDAY
JAN 20
TUESDAY
JAN 21
WEDNESDAY
JAN 22
THURSDAY
JAN 23
FRIDAY
JAN 24
SATURDAY
JAN 25
SUNDAY
Open
CAT Lab
Closed
Martin Luther King Jr. Day
9am – 5pm
9am – 5pm
9am – 5pm
Closed
Closed
Closed
Open
Central Reading Room
Closed
Martin Luther King Jr. Day
8:30am – 5pm
Winter Session
8:30am – 5pm
Winter Session
8:30am – 5pm
Winter Session
8:30am – 5pm
Winter Session
Closed
Winter Session
OPEN 24-HOURS
Opens at noon
Open
Health Sciences Library
Staffed hours listed below. Library accessible 24/7 with SBU ID.
Closed
No Staff (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
Closed
Winter Session
Closed
Winter Session
Closed
Winter Session
Closed
Winter Session
Closed
Winter Session
Closed
Winter Session
12pm – 5pm
Open
Music Library
Closed
Martin Luther King Jr. Day
9am – 5pm
9am – 5pm
9am – 5pm
Closed
Closed
Closed
Open
North Reading Room
Closed
Martin Luther King Jr. Day
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
8:30am – 8pm
12pm – 8pm
12pm – 8pm
Open
Southampton Library
Closed
Martin Luther King Jr. Day
9am – 5pm
9am – 5pm
9am – 5pm
9am – 5pm
Closed
Closed
Closed
Special Collections
Closed
Martin Luther King Jr. Day
By Appointment
By Appointment
By Appointment
By Appointment
Closed
Closed

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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Hourly Traffic (Typical vs Now)

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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.