Library Hours
Regular Fall & Spring Semester Hours (August 30—April 27)
| Days | Irwin | Science |
|---|---|---|
| Monday—Thursday | 7:30 AM—1 AM* | 8 AM—Midnight |
| Friday | 7:30 AM—8 PM | 8 AM—8 PM |
| Saturday | 10 AM—8 PM | 10 AM—8 PM |
| Sunday | Noon—1 AM* | Noon—Midnight* |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Post-Summer and Pre-Fall Semester Hours (August 19—29)
| Dates | Irwin | Science |
|---|---|---|
| Aug. 19—23 (Mon.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Aug. 24—25 (Sat.—Sun.) | CLOSED | CLOSED |
| Aug. 26—29 (Mon.—Thu.) | 8 AM—8 PM | 8 AM—10 PM |
Labor Day (August 30—September 2)
| Dates | Irwin | Science |
|---|---|---|
| Aug. 30 (Fri.) | 7:30 AM—8 PM | 8 AM—6 PM |
| Aug. 31 (Sat.) | Noon—6 PM | 10 AM—6 PM |
| Sep. 1 (Sun.) | Noon—8 PM | Noon—8 PM |
| Sep. 2 (Mon.) | Noon—1 AM* | 10 AM—Midnight |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Fall Break (October 16—20)
| Dates | Irwin | Science |
|---|---|---|
| Oct. 16—17 (Wed.—Thu.) | 7:30 AM—8 PM | 8 AM—8 PM |
| Oct. 18 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Oct. 19 (Sat.) | Noon—5 PM | 10 AM—5 PM |
| Oct. 20 (Sun.) | 1 PM—1 AM* | Noon—Midnight |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Thanksgiving Break (November 22—December 1)
| Dates | Irwin | Science |
|---|---|---|
| Nov. 22 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Nov. 23 (Sat.) | Noon—5 PM | 10 AM—5 PM |
| Nov. 24 (Sun.) | CLOSED | CLOSED |
| Nov. 25—26 (Mon.—Tue.) | 8 AM—5 PM | 8 AM—5 PM |
| Nov. 27 (Wed.) | 8 AM—Noon | 8 AM—Noon |
| Nov. 28—30 (Thu.—Sat.) | CLOSED | CLOSED |
| Dec. 1 (Sun.) | 2 PM—1 AM* | 2 PM—Midnight |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Fall 2019 Finals (December 14—22)
| Dates | Irwin | Science |
|---|---|---|
| Dec. 14 (Sat.) | 10 AM—10 PM | 10 AM—9 PM |
| Dec. 15 (Sun.) | Noon—2 AM* | 10—1 AM |
| Dec. 16—19 (Mon.—Thu.) | 7:30—2 AM* | 8—1 AM |
| Dec. 20 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Dec. 21 (Sat.) | CLOSED | CLOSED |
| Dec. 22 (Sun.) | CLOSED | CLOSED |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Winter Break (December 23—January 12)
| Dates | Irwin | Science |
|---|---|---|
| Dec. 23 (Mon.) | 8 AM—5 PM | 8 AM—5 PM |
| Dec. 24—Jan. 1 (Tue.—Wed.) | CLOSED | CLOSED |
| Jan. 2—3 (Thu.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Jan. 4—5 (Sat.—Sun.) | CLOSED | CLOSED |
| Jan. 6—10 (Mon.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Jan. 11—12 (Sat.—Sun.) | CLOSED | CLOSED |
Martin Luther King Day (January 18—20)
| Dates | Irwin | Science |
|---|---|---|
| Jan. 18 (Sat.) | Noon—6 PM | 10 AM—8 PM |
| Jan. 19 (Sun.) | Noon—8 PM | Noon—Midnight |
| Jan. 20 (Mon.) | Noon—1 AM* | 10 AM—Midnight |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Spring Break (March 6—15)
| Dates | Irwin | Science |
|---|---|---|
| Mar. 6 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Mar. 7—8 (Sat.—Sun.) | CLOSED | CLOSED |
| Mar. 9—13 (Mon.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Mar. 14 (Sat.) | CLOSED | CLOSED |
| Mar. 15 (Sun.) | 1 PM—1 AM* | Noon—Midnight |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Easter Weekend (April 10—12)
| Dates | Irwin | Science |
|---|---|---|
| Apr. 10 (Fri.) | 7:30 AM—6 PM | 8 AM—5 PM |
| Apr. 11 (Sat.) | Noon—5 PM | 10 AM—5 PM |
| Apr. 12 (Sun.) | 1 PM—1 AM* | 1 PM—Midnight |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Spring 2020 Finals (April 28—May 10)
| Dates | Irwin | Science |
|---|---|---|
| Apr. 28—30 (Tue.—Thu.) | 7:30 AM—2 AM* | 8—1 AM |
| May 1 (Fri.) | 7:30 AM—10 PM | 8 AM—9 PM |
| May 2 (Sat.) | 10 AM—10 PM | 10 AM—9 PM |
| May 3 (Sun.) | Noon—2 AM* | 10—1 AM |
| May 4 (Mon.) | 7:30—2 AM* | 8—1 AM |
| May 5 (Tue.) | 7:30 AM—5 PM | 8 AM—5 PM |
| May 6—8 (Wed.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| May 9—10 (Sat.—Sun.) | CLOSED | CLOSED |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.