Library Hours
Regular Summer Sessions 1 & 2 Hours
(Mon. May 14—Fri. August 17)
| Days | Irwin | Science |
|---|---|---|
| Monday—Thursday | 8 AM—8 PM | 8 AM—8 PM |
| Friday | 8 AM—5 PM | 8 AM—5 PM |
| Saturday | 10 AM—5 PM | CLOSED |
| Sunday | CLOSED | 1—5 PM |
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.
Regular Fall & Spring Semester Hours
(Fri. August 24—Mon. April 29)
| Days | Irwin | Science |
|---|---|---|
| Monday—Thursday | 7:30—1 AM* | 8 AM—Midnight |
| Friday | 7:30 AM—8 PM | 8 AM—8 PM |
| Saturday | Noon—8 PM | 10 AM—8 PM |
| Sunday | 10—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.
Intersession Weekend (August 18—19)
| Dates | Irwin | Science |
|---|---|---|
| Aug. 18 (Sat.) | CLOSED | CLOSED |
| Aug. 19 (Sun.) | CLOSED | CLOSED |
Post-Summer & Pre-Fall Semester Hours (August 20—23)
| Dates | Irwin | Science |
|---|---|---|
| Aug. 20—21 (Mon.—Tue.) | 8 AM—5 PM | 8 AM—5 PM |
| Aug. 22—23 (Wed.—Thu.) | 8 AM—10 PM | 8 AM—10 PM |
Labor Day (September 1—3)
| Dates | Irwin | Science |
|---|---|---|
| Sep. 1 (Sat.) | Noon—6 PM | 10 AM—5 PM |
| Sep. 2 (Sun.) | Noon—8 PM | Noon—8 PM |
| Sep. 3 (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 10—14)
| Dates | Irwin | Science |
|---|---|---|
| Oct. 10 (Wed.) | 7:30 AM—8 PM | 8 AM—8 PM |
| Oct. 11 (Thu.) | 7:30 AM—8 PM | 8 AM—8 PM |
| Oct. 12 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Oct. 13 (Sat.) | Noon—5 PM | 10 AM—5 PM |
| Oct. 14 (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 16—25)
| Dates | Irwin | Science |
|---|---|---|
| Nov. 16 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Nov. 17 (Sat.) | Noon—5 PM | 10 AM—5 PM |
| Nov. 18 (Sun.) | CLOSED | CLOSED |
| Nov. 19—20 (Mon.—Tue.) | 8 AM—5 PM | 8 AM—5 PM |
| Nov. 21 (Wed.) | 8 AM—Noon | 8 AM—Noon |
| Nov. 22—24 (Thu.—Sat.) | CLOSED | CLOSED |
| Nov. 25 (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 2018 Finals (December 8—16)
| Dates | Irwin | Science |
|---|---|---|
| Dec. 8 (Sat.) | Noon—9 PM | 10AM—9 PM |
|
Dec.9 (Sun.) |
10 AM—Overnight* | 10—1 AM |
| Dec. 10 (Mon.) | Overnight—Overnight* | 8—1 AM |
| Dec. 11 (Tue.) | Overnight—2 AM* | 8—1 AM |
| Dec. 12—13 (Wed.—Thu.) | 7—2 AM* | 8—1 AM |
| Dec. 14 (Fri.) | 7:30 AM—9 PM | 8 AM—5 PM |
| Dec. 15 (Sat.) | CLOSED | 10 AM—2 PM |
| Dec. 16 (Sun.) | CLOSED | CLOSED |
Note: Overnights are subject to change
*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 17—January 13)
| Dates | Irwin | Science |
|---|---|---|
| Dec. 17—21 (Mon.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Dec. 22—Jan. 1 (Sat.—Tue.) | CLOSED | CLOSED |
| Jan. 2—4 (Wed.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Jan. 5—6 (Sat.—Sun.) | CLOSED | CLOSED |
| Jan. 7—11 (Mon.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Jan. 12—13 (Sat.—Sun.) | CLOSED | CLOSED |
Martin Luther King Day (January 19—21)
| Dates | Irwin | Science |
|---|---|---|
| Jan. 19 (Sat.) | Noon—6 PM | CLOSED |
| Jan. 20 (Sun.) | Noon—8 PM | CLOSED |
| Jan. 21 (Mon.) | Noon—1 AM* | 10 AM—8 PM |
*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 8—17)
| Dates | Irwin | Science |
|---|---|---|
| Mar. 8 (Fri.) | 7:30 AM—5 PM | 8 AM—5 PM |
| Mar. 9—10 (Sat.—Sun.) | CLOSED | CLOSED |
| Mar. 11—15 (Mon.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| Mar. 16 (Sat.) | CLOSED | CLOSED |
| Mar. 17 (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 19—21)
| Dates | Irwin | Science |
|---|---|---|
| Apr. 19 (Fri.) | 7:30 AM—6 PM | 8 AM—5 PM |
| Apr. 20 (Sat.) | Noon—5 PM | 10 AM—5 PM |
| Apr. 21 (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 2019 Finals (April 30—May 12)
| Dates | Irwin | Science |
|---|---|---|
| Apr. 30 (Tue.) | 7:30 AM—Overnight* | 8—1 AM |
| May 1 (Wed.) | Overnight—Overnight* | 8—1 AM |
| May 2 (Thu.) | Overnight—2 AM* | 8—1 AM |
| May 3 (Fri.) | 7:30 AM—9 PM | 8 AM—9 PM |
| May 4 (Sat.) | Noon—9 PM | 10 AM—9 PM |
| May 5 (Sun.) | 10—2 AM* | 10—1 AM |
| May 6 (Mon.) | 7:30—1 AM* | 8—1 AM |
| May 7 (Tue.) | 7:30 AM—5 PM | 8 AM—5 PM |
| May 8—10 (Wed.—Fri.) | 8 AM—5 PM | 8 AM—5 PM |
| May 11—12 (Sat.—Sun.) | CLOSED | CLOSED |
Note: Overnights are subject to change
*The doors to Irwin Library lock at 10 PM. To gain access to the building after this time, an active Butler ID is required.