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UNB Libraries: Harriet Irving Hours and Study Rooms
UNB has four library locations. In Fredericton, the six-storey Harriet Irving Library is the main one, with the I.U.C. Library for Science and Forestry and the Head Hall Library for Engineering and Computer Science. In Saint John, it's the Hans W. Klohn Commons. From September 8 to November 6, 2026, Harriet Irving is open until midnight Monday to Thursday, and it stays open until 2 a.m. most nights from November 16 to December 20.
Sources checked October 2, 2026. View sources
Which library to use
You can use any UNB library. Most seats are open to walk in, and every location has tables, carrels and bookable group study rooms.
| Library | Campus | What it's for |
|---|---|---|
| Harriet Irving Library | Fredericton, centre of campus | The largest library: print collections for every faculty, the Harriet Irving Research Commons and the most research services |
| I.U.C. Library | Fredericton | Science, and Forestry and Environmental Management |
| Head Hall Library | Fredericton | Engineering and Computer Science |
| Hans W. Klohn Commons | Saint John, on your left as you enter campus | The Saint John campus library |
Fall 2026 hours
| Library | Monday to Thursday | Friday | Saturday | Sunday |
|---|---|---|---|---|
| Harriet Irving (Sept. 8 to Nov. 6) | 8 a.m. to midnight | 8 a.m. to 10 p.m. | 10 a.m. to 10 p.m. | 10 a.m. to midnight |
| Harriet Irving (Nov. 16 to Dec. 20) | 8 a.m. to 2 a.m. | 8 a.m. to midnight | 10 a.m. to midnight | 10 a.m. to 2 a.m. |
| Hans W. Klohn Commons (Sept. 9 to Nov. 7) | 8 a.m. to 10 p.m. | 8 a.m. to 8 p.m. | 10 a.m. to 8 p.m. | 10 a.m. to 10 p.m. |
| I.U.C. and Head Hall (Sept. 8 to Nov. 6) | 9 a.m. to 9 p.m. | 9 a.m. to 5 p.m. | Check the hours page | Check the hours page |
- During Harriet Irving's late hours, library services run until midnight; the building stays open later for study.
- Holiday hours differ. On Thanksgiving, October 12, 2026, Harriet Irving opened at 1 p.m.
- UNB's hours page also shows a short summary table with different times. Use each library's complete hours page.
Booking a group study room
- Only registered students can book, for academic work.
- Group rooms need at least 3 students and hold 5 to 8.
- Book up to 3 hours at a time, once a day, up to 7 days ahead. Back-to-back bookings aren't allowed.
- Check in within 10 minutes of your start time by scanning the room's QR code or using the link in your confirmation email, or the booking is cancelled.
- Most rooms have a 46 to 70 inch screen with wireless sharing and a whiteboard. Ask the Access Services desk for markers.
- Covered drinks and snacks are allowed in group rooms.
Quiet zones and getting help
UNB's libraries have zones for quiet study together and silent study alone, and hundreds of individual seats. If you want to work with a group and talk, book a group room.
For research help, start with the Ask Us live chat, the subject Research Guides or any service desk. Research Guides name the librarians for each subject, and they meet with students online or in person.
Keep exploring
Sources and updates
This independent guide summarizes the official information linked below. Availability, access rules and application cycles can change; check the relevant university page before making a decision.
- UNB Libraries: welcome to the libraries
- UNB Libraries: hours of operation
- UNB Libraries: Harriet Irving Library hours
- UNB Libraries: Hans W. Klohn Commons hours
- UNB Libraries: Science and Forestry (I.U.C.) Library hours
- UNB Libraries: Engineering and Computer Science (Head Hall) Library hours
- UNB Libraries: book a study space